If we're talking about all-time rankings, a theoretically expansive all-time list that encompasses what we can currently watch of wrestling going back to the 1920s/10s/whatever, even Top 50 might be pushing it. I'll give him Top 100, but beyond that is going to require some seriously close examination. This in no way means that he was a bad wrestler (he had his moments of unwatchability, but he also had legitimate moments of greatness), just that when you stack him up against legitimately, unimpeachably great wrestlers in all-time ranking arguments, he seriously pales in comparison.
Let me put it to you like this: I recently watched two Triple H matches that reminded me of a Bret Hart quote from a while back (I promise I'm putting my hatred of Hunter aside here). One of them was his Summerslam 1997 steel cage match against Mankind (right around the time he got Chyna as a bodyguard, right after he won that year's King of the Ring, still doing the New England elite gimmick, shortly before they hook up with Shawn Michaels and Rick Rude to form DX) and the other was his first RAW match against Shelton Benjamin (side note: if you ever needed an argument both for and against Shelton's star potential, this is the match for you). The Bret Hart quote was:
(Had to give the whole quote in case you all decided to not watch the video: )
You can say that Bret's lionizing a certain type of wrestling or an ideal of what wrestling should be, but there's an essential truth to what he says here. Hunter is often a guy who's just good enough to be a part of great matches, and is also a deeply uncreative, derivative wrestler.
Quick, think of your favorite Triple H match. Now, think of the best parts of those matches. In any of those examples, is Triple H actually the driver of the spot? Is what he does your most prominent memory of the moment or the match? Often times, the answer is no. Most everything good that Mankind match involves Hunter as a secondary player. Mankind is the guy the crowd's invested in, the guy taking the risk, the guy all of the heat is on. The crowd could barely give a fukk about H, and he's about to be placed into a main event stable in three weeks or so. Whenever he is in any way the most memorable part of the match, or the person putting the match together, it's because of the second point.
Triple H is a fukking ripoff artist as a wrestler. This isn't a bad thing; some of your favorite wrestlers are shameless ripoff artists (see: Ric Flair, who jacked the entire structure of the Nature Boy gimmick from Buddy Rogers). But that Shelton Benjamin match is damn near a carbon copy of Flair's matches with Sting. The entire concept of Evolution, down to the very month to month booking of the stable, was ripped from the Four Horsemen. Hell, his NWA fetishism in general. But he's an incredibly uncreative wrestler, and this is often why his long matches can be so dull at times. He also gets a significant amount of mileage out of that well, and many of his best ideas as a wrestler and administrator come from that well, but it's been well-worn. Sometimes, we need something new, not an homage.
Bret has the absolute correct take on Hunter as a wrestler: A good worker who had an excellent career, but also wasn't really as great as he or everyone else wants us to believe because he was lacking in the attributes that makes someone a true all-time great.
Let me put it like this: John Cena is better and and someone who is probably a lock for a Top 50 all-time spot, and it really isn't even an argument to me.