Should I trade my m43 system for Sony RX-10

If you look at DPRs reviews of the RX10 that f/2.8 is actually the equivalent of f/7.6 when it hits the sensor, while the DPR review of the 14-150 is a healthier f/5.6 at 150 mm. I DO wish though the comparisons could be made in a more consistent manner, I'm not fully comfortable with my explanation and logic, but I think it, and the reviews, do support my position as a "Maybe/Maybe not" response.

The Sony is an equivalent f/7.6 at all focal lengths, while at minimum focal length for the 14-150 is an f/4.0. The effective f/stop on the Olympus cameras aren't going to be all that different from the Sony because of the larger sensor.  (And this doesn't even factor in the superior IQ of a larger sensor)

Will you be shooting mostly at max zoom extension? Will you be shooting much at WA? Are you comfortable with the ergonomics of one camera over the other? Does your software support the new camera?

Might you get better reach and performance by upgrading your camera to a better m4/3s with better high ISO performance? Could you improve your current camera's performance by buying a better lens? Probably and for less cost than a whole new system (Things always cost more than expected, and purchase prices of old gear is an ESTIMATE, not a guarantee unless you've gotten a written appraisal from the buyer already)

I don't think the technical portions of the reviews make a strong case for one camera over the other. It is going to render down to how well one camera fits your hand, and your desire for just getting something new.