Rooted and surprised of three things:
1. Wifi tether actually is faster with data than the Incredible. I figured the bottleneck was the actual 3G connection, but this is faster. 3G is still an obvious bottleneck, but seems the Incredible added another.
2. Wifi tether normally runs very warm, but the DX2 is cooler than the Inc.
3. More stable connection. The Incredible would lose connection a few times during a session, but not seeming so yet with the DX2.