Paragon Mnk3
Medium humanoid
Hit Dice: 3d8 (max)+21+36 (81 hp)
Initiative: +18 (Dex, Superior Initative)
Speed: 120 ft. or 100 ft., depending on interpretation of "triples"
AC: 54 (+10 Wis, +10 Dex, +12 insight, +12 luck)
Base Attack/Grapple: +2/+12
Attack: Unarmed strike +37
Full Attack: unarmed strike +37 or flurry of blows +35/+35
Damage: 1d6+30
Space/Reach: 5 ft/5 ft.
Special Attacks: Stunning attack (DC 34)
Special Qualities: fire and cold resistance 10, DR 10/epic, SR 31, fast healing 20, evasion, still mind
Saves: Fort +20, Ref +23, Will +23 (+25 vs. enchantments)
Abilities: Str 30, Dex 30, Con 25, Int 24, Wis 31, Cha 23
Skills: 72 points, +10 competence bonus plus bonuses from improved ability scores (avg. +7 over human monk)
Feats: Deflect Arrows, Improved Initiative, Improved Unarmed Strike, Stunning Fist, any two others
Epic Feats: Exceptional Deflection, Superior Initiative
Human Mnk21
Medium outsider (native)
Hit Dice: 21d8 (94 hp)
Initiative: +7 (Dex, Improved Initative)
Speed: 100 ft.
AC: 22 (+5 Wis, +3 Dex, +4 monk)
Base Attack/Grapple: +15/+17
Attack: Unarmed strike +17
Full Attack: unarmed strike +17/+12/+7 or greater flurry of blows +17/+17/+17/+12/+7
Damage: 2d10+2
Space/Reach: 5 ft/5 ft.
Special Attacks: Stunning attack (DC 25), quivering palm (DC 25)
Special Qualities: improved evasion, still mind, ki strike (lawful, magic, adamantine), slow fall (any), disease and poison immunity, abundant step, timeless body, empty body (21 rounds/day), DR 10/magic, SR 31
Saves: Fort +12, Ref +15, Will +17 (+19 vs. enchantments)
Abilities: Str 14, Dex 17, Con 10, Int 10, Wis 20, Cha 8
Skills: 105 points
Feats: Deflect Arrows, Improved Initiative, Improved Trip, Improved Unarmed Strike, Stunning Fist, any seven others
Epic Feats: Exceptional Deflection or Improved ki strike
So, the paragon has an AC 32 (count 'em) higher than the human, an attack bonus 20 higher, and does more damage in any round in which it is not possible to make a full attack, even assuming that both characters were to be able to hit the same number of times, which is not the case. (Note that the paragon could take Power Attack as one of his feats and stack the odds even higher in his favor.) Moreover, the paragon isn't exactly looking like he'll go down in one blow; his hit points are nearly as high as the human's, assuming equal point buy! The one advantage that the human has is a wider variety of DR penetration (although the human would need to burn his single epic feat on improved ki strike in order to get the highly useful epic DR penetration, which the paragon gets for free).
The human does have a wider variety of abilities, but the paragon has the advantage of sheer power, nearly automatic initiative, and really useful raw combat abilities such as its DR and fast healing. I'd take the paragon over the human any day, if I had the choice.