Neither is more strict - they're both the same. It was a joint effort at my house.
My mom is easier to talk to...but neither were easier/harder on us.
They were both pretty strict when we (my sister and I) were kids, and they are with my little brother now. But I lived through it...
Of course now that I'm back at home for a couple months it's funny. My parents try not to be strict (since I'm an adult now) but they still get annoyed when I'm out "too late" or something... -_-