The team hopes Johnson can step into that role, but is he ready to take on a scorer such as Durant? That's a bit too much to ask.
Sefolosha may also slide down to small forward. While the Thunder may not have the same depth at the position, Durant outweighs whatever the Lakers have to offer.
Serge Ibaka is one of the best defensive power forwards in the league. Last season, he took a step forward offensively, averaging 13.2 points to go with his 3.0 blocks.
Assuming Pau Gasol starts at power forward for the Lakers, he's far more skilled than Ibaka offensively -- but Ibaka's length can be bothersome to Gasol.
Ibaka is backed up by Nick Collison, who is also one of the better defenders at his position -- although he isn't much of a scoring threat.
The Thunder may also play Durant and Gomes at four.
Whether starting or coming off the bench, Jordan Hill gives the Lakers energy, rebounding and size.
The team can also play Elias Harris, Shawne Williams and Marcus Landry at the four (although not all may make the final roster). Harris has potential as a defender. Williams and Landry are better shooters.
If Hill starts, the Thunder have the advantage at power forward. If it's Gasol, the Lakers are stronger on the offensive side -- but slower and less mobile defensively.
While Oklahoma City won't look for points from the center position, they boast size and toughness.
Offensively the Lakers are better -- defensively the Thunder have the advantage.
Who is better?
Depth is an issue for the Thunder. They're almost completely reliant on the play of Durant and Westbrook.
That said, the Oklahoma City duo is good enough to put the Thunder ahead of the Lakers.