Wind is likely the fastest of the elements or at least 2nd to lightning, although lightning is quite visible when used versus wind which tends to cut without asking questions.
So given that Sasuke stabbed Sakura though the gut in the end of Part 2, it's safe to say Sakura's strength will prevail up to a certain point, but Temari's speedy attacks will win in the end.
TO NOTE: Even with 100 seals, Tsunade was pretty much INCAPACITATED after being CUT IN HALF from Madara (sharingan only) destroying all of the Kages. Temari is no Madara by far, but a wind attack can easily cut Sakura in half given she has "no defensive" counter measures.
The only way I'd give it to Sakura in Part 2 or Gaiden is if managed to break Temari's fan with a punch. Even though it's a defensive fan shield, I feel Temari could still reinforce it with her Wind Chakra. Plus the fact, you can't cut wind (no pun) but the wind can cut you!!!
You just can't hit what you can't catch. I like both characters for their strengths. But Temari FTW just because she's a long distance jutsu user, whereas Sakura would have to both dodge & close the gap.
Gaiden: Still, Temari. Wind nation would keep training compared to Fire nation, even in peace I'm willing to bet. I don't know if Sakura even really improved but as Tsunade's age shows us, that strength never goes away! But I question her speed at this point.
The invisible nature of wind attack makes it hard to avoid, although Sakura showed formidable skill against her fight with the speedy Sasori in Naru Ship. But guess what? Kankuro owns Sasori's puppets now, so I'm sure Temari is also at the same speed if not faster as they likely train together.
So I have it as TEMARI WINS IT ALL!! (And I didn't even get into talking about her summoning jutsu)