Angel's character was far deeper and dynamic in his own series than during his time on Buffy. Not that this should come as a total surprise, but the contrasting difference in how his character behaved was pretty stark.
Edit: I totally misread what you were replying to, but I still stand by my statement all the same. Additionally, Angel did probably have something of an equivalent following, but I'm pretty sure Buffy ended up with the larger numbers overall.
Angel's character was far deeper and dynamic in his own series than during his time on Buffy. Not that this should come as a total surprise, but the contrasting difference in how his character behaved was pretty stark.
Edit: I totally misread what you were replying to, but I still stand by my statement all the same.