From the ANN of BTM:
https://bitcointalk.org/index.php?topic=660544.msg9253396#msg9253396:
Quote from: johndec2 on October 19, 2014, 11:58:36 AM
Buck. It's not xhash's fault. The coins take 720 blocks to confirm and this current round of 720 has taken a few weeks. Everybody is in the same boat. In a day or so we will move to the next round of 720, the diff will drop and the whales and multipools will move in and 720 blocks will disappear in a few hours... Then everyone will sit back and wait for the painful process to repeat.
Johndec2 is a member of the Criptoe team. I'll catch him in chat and get some insight into this.
I can see the disparity though, as the difficulty algorithm there isn't doing what it needs to do. BTM isn't a difficulty algorithm, and can't handle highs and lows. DGW3 can when properly tuned. Using a straight difficulty algo like LTC/BTC with BTM = no bueno. Using it with a more advanced difficulty algo would most likely be just fine.
-Fuse