This is total BS. The suffering of gay and lesbian high school/college students is unique. If you're fat, you can lose weight. If you're a nerd, you can change the way you dress and start listening to cool music.
I'm sorry, but are you saying what people find ENJOYABLE is something they can physically control and change?
Would ACTING like you like different music, or dislike certain activities, or talk in a certain way when its not actually how you feel any different than ACTING like you like someone of the opposite sex?
As to what kind of bullying is "worse". I think its really hard to determine. Location does play into it. Additionally, the ability of that individual to DEAL and adapt and react to the bullying ALSO greatly affects how intense or harsh it is.
There was a thread once about bullying and name calling and such that a poster who is no longer with us was participating in and I shared a bit of personal history about myself, stating my honest belief of how much smaller...despite it bothering me at that time in my life...it must be compared to what she and other homosexuals experienced. In one of the kindest and most heart touching acts I've ever had online she quietly sent me a PM telling me that I should not degrade my own situation, that people who are treated wrongly should not judge each other as somehow "worse" or "better" in severity than the others but that they're equals and thanked me for sharing my story. Her words kind of stuck with me.
Kids can be assholes, they can be jerks. They can be jerks because you're black, because you're fat, because you're short, because you're rich, because you're smart, because you speak funny, because you're a geek, because you're gay, because you're in band, because of who you're dating, because of your parents, because of x, y, or z. Rather than pointing fingers going "oh that group gets it so much worse than others", thus belittling the experiences and possible pain others have had, the thought should be more pointed on solutions in helping people to deal with those situations be it emotionally or in a more proactive way.
There may be times when a kid is picked on far worse becasue he's gay than a kid that's just poor and akward, but there are undoubtably times when the opposite is true. Hell, in my fraternity at college we had one brother who was gay who rarely if ever got any ribbing done to him regarding his sexuality while we had a straight brother who was greatly metrosexual that I'd dare say got ten times the "gay" ribbing then the actual gay guy did.
I think its completely overshooting the situation and attempting to try and make a political statement rather than deal with reality when we attempt to make out as if a particular group or situation is universally some kind of greater issue or problem.