Nope. That's totally different. Especially on the ratio thing - The guys carried Litbus HARD. The start of Litbus was great. There's some action music, a big scary guy, a fight... it's like "wait... this is Key?"
Then cats happen. There's fighting and baseball and probably the best comedy seen in Key VNs.
I have no problem with the common route. The problem I have with Litbus is that the individual character routes were all weaker than the VNs that preceded them. Kanon and Clannad were good because they had a good cast, and they did justice to those characters in the routes. They weren't always the most powerful stories, but they were worth investing in.
Then you go from that to... Oh, Rin1. Sudden ending. Oh, Kud route. It's trying to be tragic? When does sad stuff happen? Oh, Komari route. Didn't they do this before?
It was different to what Key did for years, and to me, it was an unwelcome change. Litbus is still a great VN, it's definitely up there on my ratings, but only because of the common route and refrain.
... The first season of the anime was really boring though. Probably because it was just the heroine routes... I do think they did Kud's route a better service than the VN ever did, which going into the VN was the route I was interested the most, so it was nice to see it being not terrible.
Most of the characters overall didn't have big roles. You have like... Otonashi, Yuri, and Kanade. The rest are quick plot devices or comedy punching bags.
Well... Rin doesn't really have a backstory. She's a shy girl. She grew up. It's basically the same as Riki's but without anything eventful.
In the first season they cut tracks awkwardly, and apparently forgot that half of the soundtrack existed.