It all depends. In some cases it probably is faster than Sentech! You'll get about 4 - 8kB/s download speeds, depending on your connection. Capped accounts are usually constant at 64kb/s.
Well what speeds do you think you can expect at around 64kb, my scientific calculation work that out to be around 8Kb/s
but seriously, it does work out to about that speed, even higher on multi-threaded downloads, and that nice hub to play with and it doesnt affect your 8Kb/s for international or non iBurst local.
Why dont you do some tests with your current Sentech (if you still have that) and see how people here's capped speeds/latency compares? Btw, latency obviously stays the same when you are capped as when uncapped.