Speaking for myself personally:
I started training for strength on August 29th. This is why I got so annoyed with B. Hank claiming to be stronger. Like, come on! Give me some time to get back on my program...sheesh.
Anyway, I was just shaving yesterday, and without a doubt - I am a lot flatter.
I'm stronger, but unquestionably look weaker. And I'm only 40 days in. As time goes on, I will get smaller, yet get considerably stronger.
Now, as for Jay...I think he MAY have put 700 on the bar and did a dinky little 1/4 rep. I could maybe believe that. Though 700 is a lot even to un-rack.
Heck, I would say even to squat 700 for a foot would probably be a 405+ or 450+ full squat.
So I don't know...Jay was strong when he was younger though. I remember a picture of him picking up a picnic table when he was 18. But a 700 squat is another matter.