What are "normal levels"? As far as I can tell, there are no such things.
And of course you'd think 3e is fast if you never played beyond level 7! That's like saying you've never played AD&D past level five, so therefore spells can't POSSIBLY be broken in it.
Come on, Zardnaar. You're now also--very literally--making the argument that because players weren't familiar with their own characters that that's a fault of the system. Please. If the players aren't familiar with their own character, if they legit have to constantly re-read their own character sheet just to play, that's not a fault of the system. That's a fault of the person playing it.
It is no harder to remember the contents of your character sheet as a 4e player than it is as, say, a Bard player in 3.5e or 5e.
Harder than 3.5 fighter. Every player needs power cards or phb to know what their powers are. We only had 2 phb. I wasn't the players BTW just observing as DM.
I recently ran the 5.5 starter and things ran at a decent flip with complete newbies. One didn't even know the dice very well. She was complete newb.
Normal levels 1-10. We played 3E up to level 30 and several high level games some over. Mostly creating characters that high vs getting there. Think we hit 15ish doing it that way.
3.5 was about right for modern D&D with hit points vs damage. For casuals anyway. If your edition, game, movies anything really loses casuals youre in trouble. I noticed this in 2002 (university groups and events) most other groups weren't playing 3E like forums expected. They were playing like 2E at a casual level. Our group knew about forums etc but weren't doing what forums expected either.
But hit points also didn't matter in some cases. That did actually speed things up. 3.0 played faster than 3.5. More complexity slows D&D down along with hit point bloat. 3.0 slowed dow level up it didnt slow fombat down to much. They just added ability scores to 2E monsters in a lot of cases.
If your players cant grok your system or have fun with it youre in so much trouble. 4E other big problem is most D&D players aren't into tactics. You can do similar things in 5 with zones, forced movements, weapon masteries etc but it's rare. Can be fun sometimes just not all the time.
Casuals won't go for that level of tactics and complexity. Some veterans will. Theres 3/7 in my group who can, 2 who are maybes. Of those players they've played 5, 7, 16. 23 and 33 years. 1 enjoyed 4E, 1 did not, 2 haven't played it and of those 2 1 actively dislikes tactical stuff she likes the social pillar, puzzles, world building. Last ones me I can enjoy it occasionally as a but not DMing it constantly.
Comment was made recently (were playing 4E") I run a cariety of encounters and that one was on 3D terrain, hazards, ones etc. Sometimes its a 30 by 20 room low encounter.