I know that especially in the earlier days of the game, people complained about dragons being too weak. My problem is that "my" dragons are quite the opposite. Now at Skuldafn, a golden/bronze dragon attacks directly after I arrive.
I have no clue what to do: I already stand no chance against the green blood dragons. An ice dragon once trapped me in some bandit hideout near Mt. Karth and it took me an hour and a ton of luck to flee and stay alive. The battle against Alduin took me several dozens (!) of tries, I guess this encounter was my hardest boss fight to date, it was even harder than Irenicus from Baldur's Gate 2

I am on PC, something must be going wrong here. I just checked the health of the Skuldafn dragon before it started tossing me around, it still had 5.000 HP, according to the uesp, this should not be the case with a "Elder Dragon".
Here's my character:
- Heavy Armor, Blocking and One Handed at almost 100
- About 350 health and stamina
- Armor rating about the same
- Dragonbane, Dragonpriest staff, Rahgot mask, Sanguine's Rose, Mixed heavy armor