(Thor I#426) - With the danger having passed, Leir engaged Thor in battle to claim Sif as his bride, but Sif separated them and attacked Leir herself, having chosen herself to serve as her own champion. Sif humiliated Leir in battle, causing Caber to remark: "She will surely make a fitting bride for a true warrior-born! A pity that she is not for you!" Leir returned to Avalon with Caber.
Not only is Leir a wife beater, but a lousy one at that.
Firelord (despite his showings) beats them both.
__________________ Quotes from Hia8:
"I claimed that the science is sometimes faulty."
"You don't understand. This is fiction. That means none of this stuff really happened."
"There is no writer to purposely ignore a character's natural ability just because it suits the story."
"in some cases because the writer knows that Character A will dominate Character B easily and refuses to allow this to happen for the sake of the story."
He'd still take them both at the same time. Leir is basically useless against someone of Firelord's level, so it's basically just Fireloird vs Super Skrull. Kl'rt is good, but Pyreus is way better.