In several games I have played lately, when I push T to attack, I seem to get horrible luck, but if I attack with 3's, I seem to get much better luck, is there some type difference between the two? or is it that I'm lucky with 3's and not with transfer attack?

Shh.  Don't tell anyone.  Yertle -delete this thread.

What other keys are you holding down when you push T?  Yertle -delete this thread!

Seriously though - you are not the first to suggest such a thing.  The computer guys will say it the same algorithm generating the rolls, and I tend to agree with them.  I think it is one of those things that go along with humans being such lousy assessors of risk - in this case we pay more attention to the 12v2 we lost when we hit T, but not when we hit 3 repeatedly - and in the second case we probably stopped it when we saw it wasn't going our way so it never played out to the gory end.

..and we discount the times we take out 10 in a row when we say to ourselves, "It's about time I got lucky!"

for me "T" button is "to be or not to be" :)

sometimes i win 5 vs 10 and sometimes i lose 15 vs 3 using T button!

I will never use that T button again, never!