If the Sea Hurricane had remained in service longer, I suppose it could have handled German aircraft it was likely to meet in the air. There were superior German single-seat fighters like the Me-109F and Me-109G and the FW-190, but considering they were short ranged, I dunno how likely a Sea Hurricane would be to encounter one. I suppose a purpose built Sea Hurricane would have had a performance similar to a Hurricane IIa, b, or c, which would have been plenty for, say, an FW-200.