I think it sounds good. Of course Bruce doesn't hit the high notes on the chorus, but at least he is professional and smart enough musically to know it's not going to happen so he sings the harmony a third lower. So it didn't clash and didn't sound strained or flat.
Plus, he's had COVID since the last tour. Anyone who's had that can tell you the fatigue is real and enormous. Takes a while to get over and feel "normal" again. (Though Bruce is hardly normal to begin with; superhuman endurance for a 64 year old doing what he does)
Both this post and the one from @frus that @mckindog is replying to are great illustrations of why Maiden is the best and why I love these forums. Great songs produce great thoughts. Good people (like Maiden fans) have good discussions. Thanks to you both. Up the Irons!