1: There are more then 6 types of enemies you will be facing in epic.
1a: Shirardi is **** for making your one class feature slightly more flexible
2: Getting 3 of your feats for free doesnt matter too significantly when they are replaced by a worse feat tax
3: Critical modifier is expanded and enhanced by Kensai, while the capstone is the same as all the benefits of Tempest 3. Kensai also has a boost that gives +6 strength, as well as having pre-requisites that match the effectiveness of Favored Enemy at every level
4: Shirardi is absolute hell for anyone who does a tempest ranger.
5: No strong class features exist within ranger, except for their ability to prepare FoM and Camoflage
6: Evasion + a small boost in AC is not an Epic Cavalry Plate T3, Favored Enemy is not Kensai, Sneak attack (which can be landed 60% on Undead/Constructs in class), Frenzied Mighty Rage, or Exaulted Smite Evil 4. You dont have Improved Sunder or Devastating Critical.
Let me put it this way: If i say a class sucks, i have a good reason for believing it does.