What is the stronger wheel set ?
Mavic Sport or Omega Mach 1 ?
These are rims, rather than wheelsets.
What will make the biggest difference with wheels built with these rims is who builds them. Wheels built by someone like Harry Rowland will be as strong as they can be. I would give him a ring - he isn't expensive.
Sorry I should have said, they are wheels on a bike I was looking to buy, I purchased the bike and rode (no sprinted LOL) it home, only 2 miles but they seem ok