That's a good estimate of how many modern non-animated figures have been released from POTF2 through the Legacy collection.
As I'm apt to do every couple of years, I go through and re-organize my collection. This time, I took a check list and counted how many unique figures have been made since the line relaunched in 1995, ending with Legacy. I'm sure there will be a lot of debate over what counts and I wouldn't be surprised if I missed a few, but I don't think that number his very far off. I counted every figure with modified parts, an example being the POTF2 deluxe Stormtrooper, as well as kit bashes like the "I am your father" Luke that is the Saga Bespin luke with OTC Jedi Luke head. Re-paints were a judgement call, such as the OTC POTF2 repaints which I counted, and minor Jango repaints which I did not. Figures that added cloaks and capes such as the Jedi in the Jedi vs Palpatine set I did not count. The Vaders were just maddening.
Anyway, there's at least some attempt to make a tally. It's interesting that the entire run of the POTF2 line had just over 200 figures while both the 30th AV and Legacy line had nearly 300 figures each.