Looking at the bluetooth specifications from http://en.wikipedia.org/wiki/Bluetooth# ... d_features
, bluetooth will be fast compared to dialup, T-1, and the slowest DSL connections, but almost anything else will blow it out of the water.
If you don't have both connections with Bluetooth 2.0 or higher, you will be limited to 721 kbits/sec or slower. Your HTC tablet is at best capable of at best 2100 kbits/sec through Bluetooth. This is fine for voice communications or a keyboard, but painful for video or file transfer. Even 802.11B wireless is 6000 kbits/sec, almost 3 times faster.
Spend the $20 USD or so to get some kind of wireless router or give up on video streaming.