If the 11th fastest is 25 minutes, and the fastest is 15 minutes, then probably either there aren't many players, or not many players who post speedrun times...
Note that that is a _glitched_ record. To get 15 minutes you need to not only be very good at the game, you also need to know ways in which the game isn't what it seems to be, e.g. IIRC Prince of Persia has glitches that let you avoid doing some puzzles through careful timing, and skip most fights if you know exactly how to do it.
This is a runner doing a glitched run, right at the start they don't even collect the sword!
There's only one glitchless run on the leaderboard, in 21m 32s of in-game time by the person with the 8th fastest glitched run. It really doesn't seem like a very actively run game and glitchless is even less so. (Also, note that the glitched record is 14m 29s in-game time and this is what runs are ranked on. Completing it in 25 minutes on the in-game timer would make you 12th fastest out of 14.)
This is a runner doing a glitched run, right at the start they don't even collect the sword!
https://www.youtube.com/watch?v=USv8OQbg73M
Nick.