Nothing in the narrative suggest Roger is able to beat his wings easily tbh, it's just y'all trying to apply the typical yonko crew dynamic to the Oro Jackson.
Rayleigh was Roger's "partner", put in the same bracket as WB (Roger's equal) in term of staus by Garp (another Roger's equal) and Gaban was said to be standing shoulder to shoulder with Roger/Ray in his introduction.
Roger is stronger but it clearly feels like his wings are portrayed as being much closer to pushing him to extreme diff than getting low diffed by him.
Personally I have Roger high diffing them
If you look at god valley, the other legends were treated as being on a different level than the wings
Rayleigh fought Sommers. Gaban fought the bomb bomb fruit guy. Roger fought Imu, Garp, WB, and Rocks. Certainly as time passed the wings grew and eventually became powerful top tiers in their own right. But nothing suggests that growth wouldn't also apply to Roger.
The clearest example of where they all sit is marineford. Kizaru was comparable in strength to Rayleigh. WB was portrayed to be on another level from all of the admirals. And that was sickbeard.
Certainly in a 2v1 the wings might be able to hold their own and put up a good fight. But from feats alone the gap between Luffy and his wings is pretty high and Luffy would likely beat Zoro and Sanji's ass in a 1v2, even if the wings would be able to land a few good hits and do some damage.