Brock Lesnar vs. Shane Carwin predictions (again)

A lot more of the pros and commentators have been throwing their predictions into the ring, and they do add a few surprises to the mix.  For one, most pros that really have expert knowledge (read:  have had recent fights) stay far away from giving a brief prediction, but others go in depth on who they think will take it.  While the general public may be more or less still split down the middle, commentators and former pros alike mostly give the fight to Brock Lesnar, possibly due to how well he looked at weigh-ins.  Everyone knows that Carwin wants to win by a first round knock-out, but most people realize that Frank Mir, loss or not, proved that it might not be a possibility for Carwin.  With that in mind, will Carwin still have the tools to get it done if/when it goes into the 3rd round and beyond?  Most people seem to be saying Brock may take punishment early on, only to go for the win after the 3rd round opens.