Korg and Yamaha has done a huge step forward with the modern arrangers, and I have to agree with Nigel.
Some years ago I would disagree, but arranger and workstations (just names) is getting very close related, and now Yamaha names both Tyros and Genos as 'Workstation'.

If the tool is buildt to do as you want it to do, it's 'Pro' enough.

.... "but changing people’s perception is not." Bill say.
Agree, but I think this is about to change for every new model coming.
I predict that future models will melt the features even more, but the high end models will be more fitted for the 'Pro' market.