I'm not seeing it. I went to the optimization forum and did not find a 180 DPR Fighter there.
Maybe you could enlighten us.
Saint of Killers: Tempest/Student of Caiphon/Punisher of the Gods (311.65 dpr) build - Page 2 - Wizards Community
300-odd dpr. A ridiculous build to be sure, but that's the sort of spread that is technically possible.
Unfortunately I can't find where the "list of highest fighter DPRs" is, as it has a dual-wielding weapon talent fighter that hits 200 IIRC, which is slightly more towards the "things that actually might be playable".
I am playing, currently, a fighter in plate mail with a heavy shield. He is a dwarf, he has 27 AC at level 8[+2 layered platemail]. He has distracting shield, 15 constitution, and 20 wisdom. He had devoted Challenge and dwarven weapon training. He is wielding a +3 Waraxe and does 1d12+16 per hit on a combat challenge[+20 to attack, expertise was free]. At level 10, he will be taking fast running because he is out of heroic tier feats he needs[and +2 speed when charging is kinda nice to let me get more attacks in].
His AC is literally as high as anyones can get at this point and will be getting higher when he moves into pit fighter and picks up plate specialization. There is no chance that anyone is going to think "oh man, its totally a good idea to attack the wizard instead of the fighter" because I am going to ruin their day if they do it. If someone was doing half as much Damage/attack as i was they still probably wouldn't do it, because they would still get their day ruined.[A 20 str fighter would be doing, with a bastard sword and the same other values as me 1d10+11 on a CC with an attack bonus of 18 on his CC, still a respectable 16.5 avg dmg/hit with a high attack bonus
A low AC for the level you are at is around 21 (14 + 6 for a 22 stat, +1 armor), so we're looking at a 6 point spread.
A mage of that level who doesn't put much into con will have 42 hitpoints. You have 78.
If a hobgoblin hand of bane is pinned between you and the wizard, he will, on average, cause 57.5% of a healing surge worth of damage to the wizard on a hit. He will cause 18.2% of a healing surge worth of damage to you on a hit. Provoking an attack from you will cause him 36.6% of a surge worth of damage.
Now, I'll do something wierd, but I think it's sound in terms of working out a metric. I'm going to subtract the healing surge percentage he takes in damage from the healing surge percentage that he deals to the wizard. We end up with 20.9%, which is greater than the metric for attacking you (18.2%).
Hence he's slightly better off attacking the wizard (assuming you and the wizard have roughly identical value as tactical targets).
If your average damage was 2 points higher, then he's better off attacking you.
If your AC increases by 2 points, then you need to get your average damage to 27.5 (ie - 5 points higher) to make attacking you the attractive choice.
All of this is with his at-will btw.
Edit: Whoops, missed distracting shield. That changes our resultant metric to ~9.3% (because he now only causes 0.46% of a surge to the wizard, assuming that you always hit, just to make the maths easier), which means he is better off attacking you with his at-will.
However with his special, he's better off attacking the wizard again (the metric for attacking the wizard is 31.3% and the metric for attacking you is 26%). And that doesn't include the stun.
Incidentally - my position is that a foe knows that he's marked. I would leave it up to the PC to determine whether the foe knows the exact consequence of the mark (I imagine most fighters
want their foe to know that they'll get attacked for breaking it).