Maybe on Revit, but this is CAD we're talking about. i.e. 2D.
just an fyi but computer aided
desgin(CAD), also known as computer-aided design and drafting (CADD) can be in 2D or 3D.
as to the OP question the integrated chip will be able to run any 2D design software and will be able to run most 3D design softwares just fine. however when doing complex 3D models or large 3D part assemblies you will definitely see the short comings of the iGPU,also you will see it fall short if you want to do larger high resolution rendering of parts.
on a side note i have run AutoCAD on my mac and i did not like it at all, the UI was very different from my work PC that I use AutoCAD and SolidWorkds on. I love working in OSX but when it comes to CAD programs i much prefer a windows environmental.
also there is the issue of running any CAD program in the tiny 13" screen, I would recommend that you invest in a larger external monitor if you go with the 13" MBP.