ive played quite a bit of NL and have never ever ever seen it re raised to $600 let alone an all in push of 1200 pre-flop...
also the chances of quads over quads is something like 1 in a quarter million.
im sure in a runner runner scenario that goes up ten fold...
and lastly, in a heads up scenario, my calculator doesn't have that many zeros.
just as a little comparison. the average americans chances of being struck my lightning is 1/3000 in their lifetime.
which means you are equally as likely to get hit by lightning 84 times in your life as you are to have your quads beat by quads, and that is based on the best case scenario of 1 in 250000 hands.
on average there are 33 hands delt per hour at a typical full table.
which means if you played for 316 consecutive days you might once see quads over quads. MIGHT.
or, lets say every time you go to the casino you play for 8 hours, you would have to go 947 days.
That is every, single, fuckin, day for 2 and half years.
so, you either have EXTREMELY bad luck, or youre full of shit.
tl;dr - math.