FD said 1:1 scale...so say if you go to the moon (our moon) it will be the exact size of the moon. That's what 1:1 scale means anyway...
Also i played EM for a long time and loved it but i fail to see how it has more content than ED? It has a wider variety of missions i guess but a lot of them are pretty boring and simple and not useful or interesting past the beginning (liek cleaning solar panels or delivering satellite....nevermind racing which is cool in theory but boring in practice). Finding uncharted planets by aiming for the nearest star is cool but you don't even get money for discovering planets. You go and land on them and it's cool but there's nothing gained from it.
I wish ED would do emergency calls though. That's how id make moeny in EM. I'd load up with the most commonly wanted goods in emergencies, like water or food or whatever, and wait for a call to come in.
There ARE things EM does better than ED but overall, ED is the superior game (no shame for EM in this..its one guy making it). For one once you figure out the combat in EM, npcs are useless. You can fight 16 at once and never risk death because you can just drift circles around them.
edit: another thing i liked in Em is the missions where you have to go scan a capital ship. I liked the risk of it, i'd rush for it and then hide under it hoping the escort and cannons would not plow through my shield before id' finished the scan. It was short but intense. I think technically you're supposed to use a cloaking device to do those but i didn't have one. It would be nice to have something like this in ED. Also...escort missions. kinda boring in Em though since its just defend this ship until it can jump in hyperspace.
Well, yes. Instead of few boring missions of ED, Evochron Mercenary has wider variety of boring missions.

If you wan't to put it that way. Nevertheless, more variation. Like said, I love ED. I just wish it had more content.
What Evochron Mercenary has that Elite Dangerous still does not in no particular order (minus what already is mentioned here and those features that are basically similar to ED):
- Very detailed training mode, covers basically everything you need to know about the ship controls and get you started in the game
- BETTER flight model that requires you to often fly without inertia dampeners to save fuel using short burns with your thrusters, like REAL space craft. And information provided in your cockpit dashboard to be able to do so.
- Planets, stars etc. gravity actually affects your ship by pulling it from it's trajectory
- Navigation, that does not quarantee that you find something, you might jump to an empty space, not near a star every time. You can jump anywhere in the space.
- Visual customization of your ship. Choosing physical frame, cargo hold, wings etc. and their placement (limited, but still cool)
- Building stations
- Trading between ships and more diverse cargo system, you can change weapons from your cargo hold, fill your fuel tank etc.
- Controlling your own NPC wing/fleet
- Hiring crew members with special abilities
- Deploying equipment, like mining drones, fuel reservoirs, repair stations etc.
- Building/designing customized weapons
- Reqruit npc ships
I just feel that currently EM provides more tools, better "set" to immerse you inside a universe where you control your own space ship and try to make a living.
Edit. And I think racing is fun! Flight model really shines in racing missions.