It's not about being too [censored] to fight, it's about which one is more fun.
Also, the poll question is "Which would u be if u had to pick one?
Neither are fun. Lycanthropy is a great way to throw a fight by turning into a dumb animal that gets destroyed by any legitimate enemy. I thought at first it would be like Dark Messiah oMaM's Demon Form, where you could switch between your normal form and demon form in a snap for the utility (plus it was damn entertaining to do), but it's a once-a-day power that takes an entire anime-transformation-sequence to enter, and is third-person only. Vampires are just pointless.
And yes, for the record, I'm still a bit salty that Bethesda lied to us about Werewolves. I was so excited to hear that they weren't going to be in Skyrim, but they lied and not only put them in, but forced you to be one for an entire quest line if you wanted to complete it.
If I
had to pick one, it'd be Lycanthropy, because you actually
do have to pick one, which is dumb. What the Companions questline should have has is an option for "You people are all pathetic scum that rely on your Lycanthropy as a crutch to make up for your lack of warrior skills. You've lost sight of what the Companions were about, and none of you deserve a place in Sovngarde when I kill you" dialogue option, which leads to the PC killing the pathetic, corrupt members of the Companions, then re-founding the entire order and restoring it to its former honor and glory.
It was fun killing the remaining Companions to charge the Ebony Blade, though. Cleansing Skyrim of its Werewolf filth while making myself more powerful was great. Farkas got to live though because he saw reason.