[franknagaijr]

Sounds like a little bit of ego got into your decision making. Your thinking might have been as follows?

I am better than player x, therefore, I can chase top pair, backdoor nut low w/out redraw, and backdoor flush, inside straight.

Edit - I wonked it on the spreadsheet, and assuming you had perfect outs for the low, flush and straight, your total equity was still only 20%. That's a clear fold to me.