My gut senses is both offers are not attractive at all.

Company #1 total package ends up almost the same as what you are getting now, not to mention all that additional inconvenience and the need to work on Saturdays. Think in terms of salaries, bullshiit titles mean nothing these days. This sort of package is really just junior executive pay in bigger MNCs, just because they print a 'manager' in your name card doesn't count for squat.

Company #2 even less sense. Firstly need to take 7% pay cut, then still forsee to work like crazy!? Forget about it honestly, it's not that Jap companies are considered premium branded employers in the first place. They are famous for poor increments and slow progression, I doubt torturing yourself there are few years is going to make your CV shine somewhere else.

In summary, unless you have serious push factors, I wouldn't waste time on these 2 unattractive offers. Don't make hasty decisions just because of some rumors about the new GM.