I am not sure where the similarities between Clannad and Bakemonogatari were found:
One had a huge budget, while the other abysmal.
One had the most predictable and boring direction, while the other experimented.
One drugged for 40 episodes reshuffling previous plots, while the other was at one layer sarcastic about cliches and on the other a quite intriguing insight into growing up.
One barely covered it's budget, while the other returned multiples to the producers.
One is based on moe-blobs, while the other on freaks
...
Should I continue?