Godly episode. Well, not really, but it tried. 8)
To make the long story short: the weaknesses are the same, ditto the strenghts. The first half of the entire episode is throwaway set-up with lots of boring dialogues. But it wasn't what killed it, it was the ultimately crappy animation. The main genga team must have taken a day off and only came back for the part after the eyecatch.
Which was a sight to behold, with Rider battling Saber in full glory. Rider is so sexy, it's not even worth mentioning anymore, but they really made her strut her stuff out this time. I mean: sexy ass shots, sexy front shorts, sexy giggles, sexy sighs, YOU NAME IT and Rider did them.
We also got to know the true names of both Rider and Saber as both of them took out their real weapons.
In the end, it was rather ambiguous if Rider survived or not. Her eyepatch shattered and Shinji's magical book with his reiju burned, but they never showed us Rider actually dying, or even appearing to have been vanquished. She just vanished.
Shameless fanservice and other guilty pleasures, thank you so much for existing! 8)
I give an 8 for the Rider showcase. It would have been 9 or even 10, if only they didn't draw Saber as a badly-proportioned smurf and Rin as a parody of that supercreepy comic character from ghost stories.
PS: Shinji's "teh eevil laugh" is really pathetic and supremely stupid.