Board Thread:Questions and Answers/@comment-27327020-20160404174206/@comment-27530968-20160506020432

Didn't Flowey state his plan to surpass Chara via the human SOULs? (After you kill Toriel in the Genocide Route) Which resulted in Omega Flowey in the Neutral Run? I mean, Omega Flowey also has 9999 LV, compared to Chara's end of series 20 LV, which does point toward the superpowered Flower being stronger than Chara. He's also capable of similar feats to Chara, like destroying the game (He does it the first time when he first obtains the SOULs, then if you lose to him, he just destroys the game, much like Chara does at the end of the Genocide Route).

I'd say Flowey is stronger than Chara in his Omega/Photoshop form.