I think Cruz is going to win. But the good news is, EITHER Cruz OR Dewhurst would be a better (i.e. more conservative) senator than KBH.
And the fact that both candidates are further to the right is another Tea Party effect.
No, there is not anything good about a Dewhurst win.
He is a smarmy, unprincipled full fledged RINO and a win for him would be a chance for the RNC-E to preen and further diss the Tea Party.