Namirs strength is at it's peak while submerged in his native waters...
The black suit replicates major being in the native waters... Hence it's major constantly at his peak...
In a brawl scenario I give it to the avenging son. Personally I believe a Martian at it's peak is superman level... They don't have the ability to keep their superstats up at those levels for long.
__________________ 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."