Diablo 3 is fundamentally broken

[Roland]

Regarding dodging - on more than one occasion I've battled one of those Act II Inferno mobs with the large swing-up times - I forget their name - where they bring a large mace up and then slam it on the ground, getting it stuck. The animation would start, I would begin running away, and when it came down I would die (I get 1-shot by that vs. white mobs) - despite being waaaaaay out of its range on my screen. All you need is a little lag, and you're a blood smear.

Berserkers. That long wind-up is the only attack you can dodge, as their normal swing is way too fast. Of course, as you noted, all it takes is a slight bit of lag or desynch and you're toast anyway. 'Course, I died once last night to a 4-pack of Lacuni Huntresses that I did NOT see spawn in (because they definitely didn't spawn WITH the boss; oh no, he had to summon them after I had run 90% of the way across the screen) when they all simultaneously jumped on top of me and 1-shotted me. I was dead before I even saw them. Such a fun game, really. How about the six times I died to a big axe-wielding skeleton (Executioner?) before giving up because he was simply unkillable by me? Shielding + Vortex + Vampiric + Reflects Damage, I could only get his health down by one-third before I finally just ran out of luck and would get Vortexed + killed. I could take exactly one hit (and it would take 75% of my life), and then I had to run. Since I couldn't do nearly enough damage to make him drop a health globe, and since any damage I DID do would reflect back on me (and reset my Brooding), I could never regain enough health in time to survive the next hit. I'd run as long as I could, put terrain between us, but sooner or later he'd Vortex me back and I'd die. Six times I died to him alone, at the entrance to the ruins where Zoltan Kulle's head is. My death timer was 18 seconds. I gave up.