As much as I love my Capri, I would say the Miata is overall a better car. The Miata has better handling, brakes, build quality/design, more capable RWD platform, and better resale value too.
I wouldn't call a Capri a sports car simply because from a performance perspective it's not that impressive, It's FWD, and upgradeability is lackluster.
But I do feel the Capri is a better daily driver then a Miata cuz it's roomier with a semi usable backseat, optional hardtop, and the FWD performs better in substandard weather conditions.