This old hotel has such a variety of room types that you can find some Exec rooms that are more desirable than certain junior suites.
As for upgrades, if you booked a classic then paid on the spot for Club access, you would not normally receive any special upgrade beyond what your status would give you. That's how it works at most hotels. But this hotel has often been quite generous to Club guests. Especially when you are sitting in the club, across the desk from the club manager.