squeeze your two dicks together and take a pic; the we'll see the diff better :-]
seriously, it wd be easier to tell for sure if we saw some pics of guy 2 from above, and not just from below.
btw, for what it's worth, i like guy 2's overall package better. the extra girth and the big head make it... well, just cuter, i guess... to me, at least.
hey, but guy 1, don't go away mad. your balls hang real low, and that is kewl in a guy's package. do you know the old song? "Do your balls hang low, do you swing 'em to and fro..."