Episode Rankings of Season 2, From Worst to Best · 7:39pm Jun 18th, 2013
Pretty much the same as with Season 1. The rankings are my personal opinion and if you wish to know why a certain episode is in a certain place refer to my individual reviews.
26. The Super Speedy Cider Squeezy 6000
25. The Mysterious Mare-Do-Well
24. Hearth's Warming Eve
23. It's About Time
22. The Cutie Pox
21. Luna Eclipsed
20. The Return of Harmony Part 2
19. The Return of Harmony Part 1
18. Dragon Quest
17. Family Appreciation Day
16. Sweet and Elite
15. MMMystery on The Friendship Express
14. A Friend in Deed
13. Sisterhooves Social
12. May the Best Pet Win
11. Hearts and Hooves Day
10. Read It and Weep
9. Secret of My Excess
8. Putting Your Hoof Down
7. Hurricane Fluttershy
6. Baby Cakes
5. Ponyville Confidential
4. The Last Roundup
3. A Canterlot Wedding Part 1
2. A Canterlot Wedding Part 2
1. Lesson Zero
There we go, feel free to make your own. As for me it's on to Season 3 reviews.