I think the question is pretty misleading.
Worse now then WHEN exactly? Each person's "nostalgic" period of anime is going to be different.
I consider the parts that are canon to be better in BOTH series.
The parts of the original that are before the series went off into filler handle those portions much better than Brotherhood, because Brotherhood tends to skim through those early parts.
Once you get to the part of the series where the original stopped following the manga, Brotherhood is better.
The second half of the original series is still good, but I prefer Brotherhood's progression and conclusion.
I'm always wishing I could merge the first half of the original series and the second two thirds of Brotherhood into one superseries.
I never really understood this argument and people love to make it all the time.
That somehow, something is quantifiably better just because everything around it was terrible.
I never followed that reasoning. Things that want to be considered great should be measured up against everything else that is considered great, not against whatever it happened to be up against at the time.
I mean, I understand the idea of "giving something it's due for doing something that had never been done before" but just because something did something unique doesn't AUTOMATICALLY make it better.