Well, he absorbs most forms of energy, can manipulate most forms of energy, can see lightyears into the distance, can actually attack people while exceeding the speed of light, can literally pick a successful fight physically with an enraged Hulk, transmute matter, and even travel through time, as well as "read" time. There's just not that many people who really compare to the Silver Surfer aside from Skyfathers, Thanos, and super cosmics.
Well...Tyrant can, yeah. But I guess he's more super cosmic.
I forgot to add he can create black holes. And THEN he got the mega upgrade.