Catalyst has better Plack/PSGI integration than Mojolicious; in fact Mojolicious is often better deployed without Plack because the PSGI stuff just gets in the way of Mojolicious' home-brewed async stuff.
The whole point of Mojolicious is to be an integrated set of tools that work well together, whereas Catalyst is focused much more on being a part of the wider CPAN ecosystem, and generating its own ecosystem of extensions in turn.
The whole point of Mojolicious is to be an integrated set of tools that work well together, whereas Catalyst is focused much more on being a part of the wider CPAN ecosystem, and generating its own ecosystem of extensions in turn.