Exit polls say TX Latino vote went 55-44 Davis and 48-47 Cornyn. Keep in mind that southern TX Hispanics are much more Democratic than Hispanics in the rest of the state.
Obama likely got high 60's with Texas latinos in 2012 (no exit poll) and lost the state by 16. Now given the turnout changes alone, the electorate that showed up in 2014 likely voted Romney by over 20 points, so close to the margin Abbott won by. If the white and black margins stayed about the same, then it's quite likely that Latinos went for Davis in the high 60s, and around 60% Alameel. There is no way a republican can get 44% of the latino vote in TX and stay under 60%.
Unless Davis improved significantly among whites (I doubt it), the hispanic vote for governor is certainly closer to what Latino Decisions has it than the exit polls. Although why they have Alameel so high is a mystery.