straight guys may get sucked by dudes, but they don't suck other dudes... unless they are real, true brothers. I have 6 brothers, one of them gay, and we all did crazy sex stuff together... still do with a few... but the straight ones only would suck if it were a dare or money bet... and then it was just for a few seconds.
They both are hot fuckers but that older bro, his hairy pubes & his comfort level at getting it on and then off with his brother, just wicked hot stuff!