I would guess that Cruz’s home state is a big factor.
And New Hampshire was a big factor for Trump in the early season, and Massachussets and Vermont were a big factor for Trump on Super Tuesday...
Yeah, each State has it’s own influence, but since you ask, here is Cruz’s numbers for Super Tuesday without Texas:
23.6
A little lower than 25.4, but still higher that the early States of 20.8. An upward trend for Cruz even when you take out Texas.