Besides the upload amount and the time being member, Power User status requires a share ratio of 1.05 .
It is taken away if the share ratio drops down to 0.95 .
It does not require a share ratio of 1.5 or even 2.0+ …
Up- and download on a tracker globally are balanced at 1.0 (in theory), on our tracker there is more upload, because of the exchanged Seed Bonus Points.
Clearly if a member is "just" downloading torrent's files and then seeding them back, it will be difficult to get a share ratio over 1.0 , original torrent posters have always an advantage regarding share ratio.