RGB Mod: Core-grafx VS PC Engine

[strider1911]

Hello,
I'm trying to lock down on a "definitive" RGB mod that can be applied to both a white PC Engine and a Core Grafx I/II.
Assuming I'm using the EXP connector at the back with a custom board, here is what I'm trying to figure out:
Do they output the exact same signal? If I test it on a PC Engine can I assume it will work exactly the same on a Core Grafx?

The reason I'm asking is that I see a lot of conflicting opinions, some say on of them doesn't output CSYNC and some say the strength of the R-G-B signals is different.

What do you guys think?

PS - assume I will be using both an XRGB Mini and an RGB CRT TV.

Thank you all.

[speedlolita]

Should be exactly the same.

All of the PCE output csync too.

[azmun]

Alternatively, you can just purchase one of those scart rgb cables with built-in amp and encoder that plugs into said external or extension bus/socket. Bought one few months ago in eBay from a guy based in Sweden and got to test it few weeks ago. My PC Engine games never looked this good! Games look sharper and have more vibrant colors.

[speedlolita]

No good if you want to use a CD unit in future though.

I have this circuit in my Duo R, N64 and SNES Mini (changed 75ohm on the output for 100ohm though) and it looks incredible.