Jalby,
At this point the product is still young and does not have the built in functions that Cloverleaf has. Also I am a little biased to Cloverleaf, because I have ran it on a AIX box that never goes down. Unlike NT that needs to be re-booted. I feel that Biz-Talk is great first step, but has a ways to go before it is in the same arena as Cloverleaf.