...wow, that sounds like a horrible and frustrating gaming experience. But I'm glad mods were able to give it to you (and that the base game was nothing like that.
)
Oh, it's not actually as bad as he makes it sound. I also play with a similar setup, but enjoy it immensely, although I guess it's better balanced in my case (or I'm not as bad at playing the game as I thought, and I AM bad - I never remember the 100 healing potions in my inventory, never watch my health track, can't aim properly at anything that moves, panic and do stupid things whenever things get dire, and absolutely svck at melee).
I have Deadly Reflex with all physical damage increased by 50% and timed block, Supreme Magicka with doubled magical damage and high chances of offensive magic inflicting detrimental effects and Duke's archery making it possible to either kill or be killed with just a couple of shots - or one if the archer is good, but that's how I feel it should be and I'm happy that Skyrim took inspiration from that mod. FCOM increases difficulty not by making enemies a lot tougher, but rather by placing more of them around with more variety amongst them, which I think is way better and more believable than demigod bandits universally populating dungeons at higher levels in vanilla Oblivion (where I would often deliberately stop leveling around 12 or 15 just to prevent such ridiculous stuff from happening). Still, Midas Magic with tripled power level allows my mage to hold her own against her foes, and the fact that she's an elder vampire using the Unholy Darkness system (slightly modified by me to give greater weakness to fire and sunlight, but more resistance to frost and normal weapons) gives her an upper hand against most normal kinds of enemies as long as she's not facing more than two at any given time, but it balances out nicely when they are accompanied by fire mages or Daedra (which they often are), so this makes me use my brain and tactical approach rather than luck and character stats to win most battles or at least get away alive (or, in her case, undead)... My character isn't physically fit and hates armour, so she must often rely on stealth, speed, reflexes, magical defences, tactics, up to five creatures she can summon and her own high magical damage output to avoid being a) one-hit toasted by fire magic, which is particularly deadly to her, but other kinds can also be nasty, b ) screwed over by archers, especially those who use ammunition or bows ignoring her high normal weapons resistance, c) overwhelemed by melee fighters (or fighter), d) cornered by a few fast enemies (which is more frequent than I'd like, but still appropriate), or e) exit a dungeon in the middle of a sunny day and burn up within the next few seconds Masquerade-style
(and I would have it no other way).
Does it make the game harder? Not really. I actually think it just makes it more challenging, which is slightly different and much better. It gives me satisfaction, because I know that it was my preparation and strategy that won the battle instead of just the difference between my character's stats and her foes'. Because I know that the law of the jungle is in effect - the best way to survive is to adapt to changing circumstances, since there is not a single universal solution to every battle - each encounter must be approached differently, so I must always be prepared. One minute, I can effortlessly mow through a camp of low-level bandits with just a few basic spells and sword I can barely use, and the next I may be sneaking through a dungeon filled with too many dangerous enemies to handle this way (say, a lair of conjurers protected by flame atronachs and clanfears - a certain death in case of a frontal assault), so I must resort to stealth, deception (Frenzy and Command work like a charm) and planning to overcome the challenge.