You do realise putting 10lbs on after the weigh in means you've starved yourself for a few days and drained all the water out of your body to make weight don't you? Yes 10lbs isn't that much, its a manageable about but its still draining. Most fighters put weight on, but most fighters drain with a few exceptions because it gives advantages. As for Hopkins-Delahoya didn't you know it was a catch weight fight, DLH was trying to drain Hops to give himself an advantage. And Hops wasnt passing up a career high payday by coming in over the agreed limit. He still weighed 172 in the ring, meaning he put on 16lbs, from that 156, Hops looked like **** in that fight for that reason. Fact is Hops should have moved up a few years before and would have done if the money was at 168/175 and not at 160. And yes Hopkins does drain to make LHW, its just draining 10lbs isn't that bad and Hops prefers to have the weight/strength advantage of the extra weight
I can confirm the catch weight was 158lbs, which Hopkins weighed consistently prior to the fight anyway. I can also rubber stamp this with further evidence if you wish. Don't ignore this and believe what you want to believe to make yourself happy. Mosly every fighter takes off a certain amount of weight off, not unless it's a serious and significant move up. Hopkins made the weight easily, walked around at 166lbs, and always weighed inside the limit. Not the signs of a man draining himself. If he was draining himself as much as you claim, he would take off as less weight as possible, thus coming in right on the limit virtually every time.
I see you ignored this part. Hopkins needed to pay lots of money for this mind. I'm sure it was a couple of hundered grand. Light-heavyweight was an unatural weight for him at the time, hence why he got on the phone to Shilstone. This was the same man who helped Spinks and Jones up to heavyweight in similar cicumstances. Unatural weight for them and they needed a specialist programme.
There is a diffrence between past ones prime and shot. Barrera was past his prim but not shot (I still don't think he is shot but I degress). I fell that Marquez was in his prime when they did meet. I don't recall exactly how I scored the fight but I recall it being a compitive fight. If a past prime Barrera can be at least competive with a prime Marquez than I think he would win a prime for prime match up.