If the right version of Walcott shows up both well trained and well seasoned he wins a close decision.
I'd favor Tucker. Better specimen, more consistent, more seamless and reliable skillset. Call me crazy.
Not crazy, just eye-test, common sense & evaluation of abilities. One fellow lost like 1/4 of his fights, while the other went undefeated plus going 12 with Tyson and Lewis ---> Walcott must win via decision, there is NO other chance. Can´t hurt him. Tucker on the other hand has also reach, mobility, size and enough power to hurt fragile chinned Joe. Checking any "tons of losses Walcott" and "Douglas/Tyson Tucker", and pretend the fight was made today, no one would make odds in the favor of the smaller, losing fellow.
Really depends on how Walcott s mind is that day imo! He could fight the fight of his life, even rattling Tucker, on his way to a points win. Or allow himself to be out pointed or stopped late by him. The Walcott that almost beat Louis and Marciano and kod Charles gets a point decision. The one that lost to Charles, loses widely and gets dropped along the way.
Primo you got to sound less like a boxrec warrior. Losses are not the sole indicator of a fighters ability. Walcott lost against ATG just like Tucker did.