The only way Morrison is getting it over on Weaver is if it's some road warrior version of Mike from early on in his career. Any good version of Weaver crushes Tommy.
Morrison most likely comes out on top. That said Weaver did get a win over Du Plooy, another banger, by surviving the early storm and turning up the gas later when Du Plooy had blown his wad. Of course, he also lost to Du Plooy in their rematch, getting blown out. So nothing's set in stone here. Tommy was more consistent though and we should keep that in mind.
Weaver could be a slow starter so if Morrison jumps on him early and hurts him he could finish the job early. But if Weaver gets through the first few rounds he would be a heavy favourite based on his superior stamina.
Morrison was certainly not more consistent against notable opposition although he had a cleaner record overall Weaver had a more impressive set of wins at his peak Weaver beat Tate, Tillis, Coetzee, Mercado, he also beat a younger better version of Williams. Weaver's peak probably started when he beat Mercado up until the 2nd Dokes fight and during that time he only lost to a prime Holmes in one of his toughest fights of his career. And a controversial early stoppage to Dokes and Weaver should've got the nod in their 2nd fight which was ruled a draw. Weaver was ranked as a top 2 Heavyweight for 3 years Morrison never come close to reaching those heights.
Weaver had too much steel and too much power for Tommy. He could also carry that power late. And once he discovered his abilities he had a confidence Tommy never had.
Weaver also had a string of losses to guys that everybody would have howled about if Morrison had faced. "Just another can for Tommy to crush" would have been the wail. And yet Weaver lost to those guys. Tommy was certainly more consistent. Look at the records.
The OP said in their "primes." Weaver was already 36 years old when he beat Du Plooy in their first fight.
I think if Morrison came out guns blazing he could stop Weaver early. Weaver was a very slow starter. If Weaver survives the first few rounds he wins.
That was early on in his pro career. Once he got proper guidance and discipline he was very formidable. From 1979-1985 he was a force. Even past prime he stopped Carl Williams in two rounds. Because of his record Int. Boxing said "Mike Who" in it's headline for it's pre-fight article about Holmes/Weaver, but Weaver fought very well and surprised many with his power and heart. He was pretty consistent after that except for the Dokes blowout loss which may have been stopped a tad early and which was kind of an abberation as Weaver showed by arguably winning the rematch albeit it was scored a Draw. That said Weaver was a slow starter and if Morrison comes out guns blazing a la Dokes in the first fight Morrison could stop him as he had more power than Dokes and pretty close hand speed. Morrison's stamina wasn't good so if Weaver survives the initial onslaught he should outlast Morrison.
You missed the point I was making I've already stated Morrison has a cleaner record but I wouldn't say he has a more consistent record vs notable opponents. Morrison was on the fringes of the top 10 rankings briefly where as Weaver was at the top of the top 10 rankings for a good 3 years Weaver reached a higher level than Morrison in their respective peaks.
You'll have to define his 'prime' then. Was that when Weaver was getting knocked out by Thomas and Smith? Or was that when he was getting knocked out by Dokes? Or hang on, was that when he was getting cleaned up by no-names Leroy Jones and Stan Ward? I see in between that he managed to punctuate a string of wins over mostly average opponents by getting knocked out by Holmes which I'll excuse. Tommy by contrast has a single loss which looks bad (Bentt) and two more to name fighters (Mercer and Lewis) The rest of his resume consists of mostly crushing the opposition. Three losses against Weaver's 18 losses. There can be no argument that Tommy was not more consistent.
This would have the makings of a real Donnybrook a real bona fide Pier sixer! Lay 6 to win 5 "PICK EM" Weaver great when cornerd or behind,and Tommy was always dangerous. Both at their best would be a real slugfest! Morrison would have to come in the ring focused as he did against Big George.
Again you're missing the point it's got nothing to do with Morrison having a cleaner record Weaver had a better record against "notable opposition". Hence that's why he was ranked as a top 2 Heavyweight for 3 years whilst Morrison only scrapped into the bottom end of the top 10 briefly. Yes Morrison was more consistent beating lower end competition as Weaver had a rough start to his career. But clearly if we're talking at their peak Weaver has a considerably better record vs notable opposition and reached a higher level than Morrison did. And there's no way Morrison would be able to push a prime Larry Holmes to the brink either.
Yeah, well. That's all your opinion and you are wrong. Morrison's best wins compare just fine to Weaver's. The difference is that Weaver lost six times for every time Morrison lost. That tells me something.