The Four Seasons vs. The Bee Gees. Were they equal in their music?

Someone asked me, “what vocal group do you believe was the best between the Four Seasons and The Bee Gees?”. Both groups had many No. 1 hit songs. Both groups musical timing was perfect for the public and needless to say, both groups made a lot of money. Each newly recorded song of The Four Season always had its own sound….different from their other recordings. So did The Bee Gees, but not as much as The Four Seasons. Question: its the battle of the vocal groups….The Four Seasons vs. The Bee Gees. How are you voting and why?