25 pounds in 7 years or 38 in 14 years isn't exactly a great deal of weight for a human to gain...

It's worth noting that those weights won't have been actual weights either but dehydrated weights... ODLH would of had to have dry up a lot more to reach light weight than he would to reach welterweight for example... so really we should be looking more at the weights they walked around at... not fought at.

Weight gain? You eat more calories than you expend... pretty simple really... steroids aren't what makes a person gain weight... they help to stop your body breaking down during intense training but that's it... You'll see guys gaining 25 pounds in a few months of training if they're into hypertrophy, so I think that comparing two fighters and the handful of pounds they gained over DECADES doesn't prove or disprove jackshit... real psuedo-science.

Every body's metabolism is set up different for a start.

But really weight isn't an issue... performance, more specifically rapid improvements in performance are.

Weight gain over decades shouldn't really raise any suspicions of steroid abuse...
Now, being in the public eye, refusing to take the most fail-safe drug test out there and then floundering around, contradicting yourself and coming up with every excuse under the sun - that might raise a few eyebrows