3rd is a little high for the starters but I wouldn't say I'm shocked. Wheeler should have won the Cy Young, Nola is a solid 2/3, with some upside as a near Ace and there is depth in the starting 5 from Eflin, Gibson and especially Suarez.
The issue is when you go beyond those 5.
I'm a little surprised the Phillies are ranked ahead of the Mets but depending on when the injury status of their stars when the list was compiled it makes sense. It looks like they are only assuming 114 innings from deGrom and that would explain the difference. Hes expected to be basically equivalent to Nola over those innings, but they have to find the additional innings from a lesser player, in this case Fangraphs projects 1 Win from Tyler Megill over 90ish innings, which isn't bad, but depletes their depth if they have any further injuries.
15th in the bullpen I find to be shocking. I assumed this had to be NL only when I saw your post. The good news is they aren't expecting any of the Phillies relievers to be al that good. Less than a win for Knebel at the top of the pile, and a similar amount when you combine hand, Familia, Seranthony and Brodgon. So we can probably afford to lose a couple of the "top" guys and be mediocre.