Nice to see you comparing the 429 to aircraft more than 30 years old and no doubt you would expect some improvement.
The 145 is only a progression of an old design and is still a BK117C2 and the end of the day.
Perhaps but new rules such as 14 CFR Part 21.19 have been implemented to prevent manufacturers from making extensive changes to existing Type Certificates.
Besides, the EC-145 is substantially different from the original BK117. It's even truer with the EC-145 T2. I doubt that EASA is forcing Eurocopter to certify the latter under a new Type Certificate.
Once in a while, every manufacturer gets a free pass...