If the RAT 3 was anything like a RAT 5 I owned, it was a really thickly ground full flat grind and really did itself a disservice as a cutter with the crinkly coat and thick edge to perform anything but wood processing tasks. I think Ontario caders to a market of people who are more abusive with their knives so they put more robust edges on them. I had the same problem with some SP plus series ontarios. I am much better with blade mods now and I think the RAT 5 would've been much better for me after taking the edge down a bit and stripping the coating off.
So, while the grind has a great impact on the performance of the blade, how that grind is done is also really important. I don't like scandis but I give fiddleback forge and LT Wright a free pass on scandis because they do them really well and it's amazingly easy to keep them very sharp without much fuss. In a similar note, I've found the shallow hollow grinds on cold steel knives very pleasant for woods knives and they're slicey but not really thin in the hollowed portion to where I'm afraid of breaking the edge like a deeper hollow found on hunting knives.
I looked up the knife you mentioned in the OP and it should be a great choice knife, from the best I can tell, in FFG. As an alternative, the LT Wright Bushcrafter HC is similar and would perform very well for you and is priced similarly depending on where you're located. The 1075 used on those will perform reasonably close to O2. I had never heard of the brand you mentioned but it looks like a promising design; I do like my Kephart shaped blades and neutral handle shapes for woodsy uses.