Lots of factors :
1. Is your spin perfected or in the high 90s?
2. Is his dex/str high that he can dodge/parry well?
3. Is your dex/str high that you can dodge/parry well?
4. Is he higher in ranks than you?
5. I can imagine h2h parrying or blocking well against a staff. But don't think they do 'that' well against a spear. I may be wrong. Staff is considered blunt, while spear is considered pierce.
6. Also, from 'martial arts' point of view, a person specializing in h2h fights better than one with a long weapon, if he can dodge well and come into close contact.
7. Is your enhanced damage in the high 90s?
8. Also from the logs, he seem to have resistant against blunt weapons. Or you are not dishing out damage well. See here :
Tip: Don't dirt kick a h2h specs, unless you mean to disarm him.
><85%hp 100%m 100%mv 6479tnl> dirt
>Your kicked dirt misses Bulgrim.
>Bulgrim is in perfect health.
>
><86%hp 100%m 100%mv 6479tnl>
>Your pound devastates Bulgrim!
>Your pound maims Bulgrim!
>Bulgrim's punch MUTILATES you!
>You dodge Bulgrim's punch.
>Bulgrim's punch EVISCERATES you!
>Bulgrim has some small but disgusting cuts.

Out damaging you.

9. Pummel took a lot of hps from you.
><68%hp 100%m 100%mv 6479tnl>
>Bulgrim pummels you with his fists.
>Bulgrim's pummeling blow devastates you!
>Bulgrim's pummeling blow devastates you!
>Bulgrim's pummeling blow devastates you!
>Bulgrim has some small but disgusting cuts.
>
><50%hp 100%m 100%mv 6479tnl>
>Bulgrim dodges your pound.
>Bulgrim parries your pound.
>Your pound devastates Bulgrim!
>Your defensive spin deflects Bulgrim's punch.
>Your defensive spin deflects Bulgrim's punch.
>Your defensive spin deflects Bulgrim's punch.
>Your defensive spin deflects Bulgrim's punch.
>Bulgrim has some small but disgusting cuts.

10. You missed a pugil. He didn't miss pummel. What if he had missed and you managed to pugil him?

11. Using different skills give different results. What if he had pummeled instead of evade?
><52%hp 90%m 89%mv 6479tnl>
>Bulgrim uses the terrain to his advantage and evades your
>blow.
>Bulgrim is covered with bleeding wounds.
>
><52%hp 90%m 89%mv 6479tnl>
>Dworlin looks at you.
>Bulgrim is covered with bleeding wounds.
>
><52%hp 90%m 89%mv 6479tnl>
>Your blow swings wildly and misses.
>Your defensive spin deflects Bulgrim's punch.
>Your defensive spin deflects Bulgrim's punch.
>Bulgrim is covered with bleeding wounds.
>
><52%hp 90%m 89%mv 6479tnl>
>Bulgrim uses the terrain to his advantage and evades your
>blow.
>Bulgrim is covered with bleeding wounds.
>
><52%hp 90%m 89%mv 6479tnl> pugil
>
>Your blow swings wildly and misses.
>Bulgrim parries your pound.
>Your defensive spin deflects Bulgrim's punch.
>Your defensive spin deflects Bulgrim's punch.
>Your defensive spin deflects Bulgrim's punch.
>Bulgrim is covered with bleeding wounds.
>
><52%hp 90%m 89%mv 6479tnl> Bulgrim avoids your pugil strike.
>Your pugil strike misses Bulgrim.
>Bulgrim is covered with bleeding wounds.

12. You are not a felar so you can't dual wield. Highly dependant on second and third attacks. He can with both hands and so he's throwing more punches than you can hit him. Again, this can affect the outcome.

13. Hidden stats like morale makes you fight worse? :P
><43%hp 90%m 89%mv 6479tnl>
>Bulgrim pummels you with his fists.
>Bulgrim's pummeling blow devastates you!
>Bulgrim's pummeling blow devastates you!
>Bulgrim's pummeling blow devastates you!
>Bulgrim's pummeling blow devastates you!
>You sure are BLEEDING!
>You are dazed by all the blows.
>Bulgrim is covered with bleeding wounds.

All in all, so many factors to consider. I'm sure others will come up more. I believe the IMPs have tested out many times before putting in the new h2h skills. This log alone does not give any imbalance to h2h.

Hope this analyzing helped you.