The 'pro' images are overexposed. They are done with an older (low end) DSLR and the kit lens. Cheap to reproduce once you gain a minimum level of skill.
The point and shoot are way off on whitebalance (blue shift). Also the P&S images are skewed. Just really poor attention to detail to mess those two things up that badly. Also a bit under exposed, the indoor shoot would benefit from a bounce flash.
I completely agree with Bjorn. You might have paid for those supposedly professional shot, but they weren't of any professional standard I've ever seen. IMO, they were poor level snapshots taken with older cheap entry level equipment. Nothing wrong with that gear if used properly by someone with even a tiny bit of skill, but in this case, there seems to have been no skill.
Besides, most true professionals use professional level equipment. They have to in order the gear hold up to everyday abuses and also provide good tactile controls for ease of use. Not because pro level gear takes a better image.
Any of these images you've shown could be taken with a D3100 and kit lens providing you learned how to use them better than those so called professionals. That wouldn't be very hard. Just add a good flash like an SB500 or SB700 to the mix so you can swivel and bounce it for fill light and I think you'll far exceed those images.
If you again hire a professional, take a good look at their portfolio first and make sure you're getting a real estate photographer. Take the time to look at this web page and maybe the video to see what a professional's image might look like.
https://fstoppers.com/product/mike-kelley-where-art-meets-architecture
Good luck and have fun.
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Cheers, Craig
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