Blind Battle Math Check

[illini43]

I was watching the FT of the Maniac Rebuyfest today and I noticed a hand that caught my attention.

It was down to 5 players with blinds at 25,000/50,000 ante 2500.

The SB had 1,300,000 before posting and the BB had 476,500 before posting.

It was folded around to the SB who pushed all-in.

Now, let's assume that the SB's range is all possible hands, so he could have anything, which is what seems to be the case when good players feel they can make the BB fold.

The BB said he had Q6o and folded.

If you look at the math, the SB is getting a little over 1.2:1 to call. This would mean he can call with the top 54.5% of hands and still be slightly +EV (correct?).

Q6o is in this range, as well as hands like 95s, J3s, etc. I know this is the final table, and a lot of money is on the line to be calling with a hand like Q6o, but was this a mistake (in the sense of taking a small edge) on the BB's part assuming the SB's range is completely random?