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Magmar why you fail me?!
This scenario I feel is worth noting; after recent update with nerfs and move set changes.
Magmar:
Release
CP 550 IV 68 - lvl 9 (1/15/15) Ember /Fire Blast
Post update
CP 1312 IV 77 - lvl 21 (6/15/14) Karate Chop /Flamethrower
Those in similar situation of gauging CP vs IV
Battle: CP-Move Set-IV
End Game: IV-Move Set-CP
Post Magmar is a clear choice while the underdog's move set makes for worthy contender.
Cast your judgement.