Not going to get into my personal opinions too much, but just to state some facts:
1) CodeTyphon is not "closed source", not even slightly. All the source for everything (each and every component, the IDE, their fork of FPC, e.t.c) is included with the download. The ONLY exception to this is the fact that the source for their standalone "CodeTyphon Center" updater/installation/package manager application is not available, which isn't particularly relevant to the discussion as it is an entirely original application by PilotLogic that does not exist at all for Lazarus.
2) The vast majority of their versions of the packages they bundle are objectively better than the originals and contain various non-trivial bugfixes, sometimes to the extent that the original package may have not even worked at all, but the CodeTyphon version does.
3) The CodeTyphon IDE itself does in fact come with no less than five entire palette-tabs worth of their own in-house controls that are not available anywhere else (ExControls1, ExControls2, e.t.c)
4) Their docked form designer (which is again something they developed entirely from scratch) has always been and continues to be significantly better than the Lazarus "Sparta" docked form designer in pretty much every way.