Rather crudely you might see the differences as being:
A university - students engaged in study, where study is an end in itself.
Developer training - students engaged in study, where being job ready is the end goal.
What does this mean in practice? Developer training might be more inclined towards studying using the latest technologies (Javascript, Rust etc). Whilst University might tend more towards studying conceptual understanding (Matrices, Functional programming) and place less importance on the programming language (some unis teach with Fortran, Delphi etc.). You might also get courses at universities that don't appear so immediately applicable to job roles (courses on provability of programs, compiler creation), whilst developer training might be shorn of any course that isn't in high demand by the industry.
However. Working in the UK, the job readiness of a university degree is seen as a major indicator of the 'success' of a university course. We have the British Computer Society accrediting courses and universities are ranked on the employment rate of their students. So in reality, there might be no difference at all.