I'm sure lots of people will answer this in their own ways, but I think that you need to define "better in terms of picture quality" means to you to get a useful answer as everyone's got different tastes and priorities.

For example, if sharpness is important to you and you don't particularly care about field of view, your best bet is probably to buy the cheaper one and put the leftover money into a sturdy tripod and a cable release. If you're willing to use a lens hood, flare becomes less relevant. If you're shooting slides, contrast will be more relevant because there's no room for tweaking in post. Etc.