Most Helpful Girl
Women. No contest.
Just from personal experience I can tell you that when you register on a dating site, the SECOND you click ok to submit your online registration, you get messages immediately.
I shit you not, online dating is mad. You wouldn't have even uploaded any pics or put anything on your profile, but the guys are already at the door.
And once you DO put up pics, your inbox will be forever clogged.
Most Helpful Guy
Definitely women, it's a no brainer. Just like in real life, women have WAAAAAAY more options than men even on dating sites. This is especially due to the skewed male-female ratio on most such sites (lot more men than women).