Why won't Pop show certain episodes?

I was super excited when the channel Pop started on my BT Vision box, as I knew it showed My Little Pony episodes on a regular basis. I even started recording them as I did not have Netflix or Amazon Prime at the time, and it was then that I noticed that there are two episodes they will not show: Season 2 Episode 15 "The Super Speedy Cider Squeezy 6000" and Season 5 Episode 17 "Brotherhooves Social". I can sort of understand the reason for not showing S2Ep15, as children may assume that drinking alcohol is an acceptable thing for them to do at a young age, as cider in Britain always has an alcoholic content, but I see no content or theme that would prevent S5Ep17 being shown on children's television here in Britain. Today I also noticed while watching "Equestria Girls: Friendship Games" on Pop that they are only showing half of the movie, and playing the end credits right after the scene where Sunset Shimmer vows to return her friends' magic and find out what the other Twilight is doing - spoiling the real ending for those who haven't already seen it! Does anyone have any thoughts on why this is happening? I really don't think Big MacIntosh dressed as a girl is offensive, in fact, I think it's the best episode of the season as it shows just what lengths he will go to to help his sisters and would totally pave the way for a RuPaul's Drag Race-esque episode where Big Mac competes in a pageant as a girl with other stallions (RuPaul's Drag Race being my second favourite show, right after MLP), much like the episode where Flutterguy comes back. I also cannot see any problem with Friendship Games, which is rated Universal on the DVDs. Some more insight into why these are not shown would be much appreciated.