He just pointed out he's lvl 24.
If you're a healer (your avvy doesn't show) going in at 24 is actually just fine, no matter how many there are, healers are always welcome.
I tried WSG at lvl 20 with my warlock, I could pick out lvl 24s and take them down occasionally, they key to succeeding was staying in the "midfield" and assisting other comrades with DOTs, Fears (when a ranged friendly is picking out some twinkie retri pally, and in general follow what others tell you.
If you're unsure whether you're welcome or not you could always ask and see what they tell you. If all of them bluntly refuse you for a good reason you're better off leaving, if they just give lame reasons like "u suck" I say f**k em and make the battle hell for them >
