For landscape photography, it is tough to beat a DSLR with a wide angle pro-lens. Especially since full-frame chips tend to have the best dynamic range, which is essential for landscape photography.
Coupled with the fact that the pro-lens is most likely a "fast" lens, you can go from shooting a mountainscape at F8 to F11 to a closeup of a flower at F1.4-2.8, with amazing Bokeh without changing gear.
Sure, some can argue that Micro-4/3 can do "almost as good" and you can "photoshop the rest". I've heard all the arguments, as I moved from Film to APS-C size sensors and finally back to full-frame. The night-time performance is excellent as well.
Also, I'm talking pro or semi-pro DSLRs. I'm a Nikon guy, so this would be the Nikon D300/700, D810, D4, etc. Not the Dxxxx series, which have some of the advantages, but not ALL.
THAT SAID.
When I'm overlanding, one of my most used pieces of kit is the Olympus tough TG series (any of them). They aren't even a "bridge camera" but a high-end point and shoot. Quality is good (not DSLR by any means), but it is pocketable (pant and shirt), doesn't need a case, water proof, crush proof, dust proof and can churn out videos if the need arises.
When a rig is crossing an obstacle, I usually grab the Olympus Tough TG and take stills or videos, the DSLR nicely protected in the car. I do shoot the DSLR enough to warrant bringing it, but it is usually for set-up shots and shots taken at the destination/lunch breaks, not for shots on the trail. It takes too much time.
Likewise, I have an excellent 3-CCD video camera (the old Cannon XH-A1) for my HD videos. The lens on that is AWESOME and it pretty much takes my best videos. But I don't take it on the trail anymore because of how hard it is to access, I end up using the Olympus Tough or my Nikon D800 DSLR instead. But that's a topic for another thread, as the OP is focused on landscape.
For landscape, I'd say full-frame DSLR is still the best. Medium format is probably even better, but hardly anyone has the $$ to invest in one of those systems for landscapes, especially when the Nikon FX, Sony Full Frame, and Canon Full Frame do pretty much just as well (and arguably better) with the smaller sensors.
In the end though, whatever you have is the best camera. So don't wait 3 or 4 years to buy the latest Canon and not take pictures in the meantime. Pick your budget and buy what you can afford, even if it is an older model from 2005. People made big bucks off of their $5k 2005 professional DSLRs and you can pretty much have them for $500-800 on the used market now!