About Portable Gaming

Hi everybody.
Since i'm a little noob about specs needed for run games and emulators very well, and my gaming dream are to have finally a portable GC and ps2, and maybe a 60fps (sooner or later we all know that this will be happen, but why not now? LOL)
I was amazed by performance of GPD Win (Super Mario Strikers for GC, as i saw, run at 60fps anyway lol)

Now, dont know if anyone here know about the developing of Smach Z, a new portable device that maybe will be launched at December of this year.
https://www.kickstarter.com/projects/smachteam/smach-z-the-handheld-gaming-pc

His main specs are:

• CPU: AMD Merlin Falcon RX-421BD (12-15w) SoC at 2.1 GHz (max to 3.4 GHz)
  
• Cores: 4/4
• iGPU: Radeon R7 at 800 MHz
• RAM: 4GB (SMACH Z) || 8GB (SMACH Z PRO) DDR4 2133 MHz
• HD: 64GB (SMACH Z) || 128GB (SMACH Z PRO)
• Screen: 6” FULL HD (1920x1080). Capacitive touch-screen

His specs are too close to Razer Edge Pro, that have CPU base 1.6 GHz, max to 3 GHz, and 8GB RAm (same as Pro version of this Smach Z)
I see that run many ps2 games very well (maybe some at 60fps?), so, obviously, Smach Z Pro can handle ps2 very well, right?

I mean, in this videos, you can see much ps2 games runs at stable 60fps, and this guy's pc specs are not much different from Smach Z (Smach max GHz are 3.4, only 0.1 less than that PC, and same RAM)

That PC specs, as you can read in video description, are:

Intel Core i3 4150 3.5GHz
8GB RAM DDr3 1600MHz (2x4GB Dual Channel)
MSI Nvidia Geforce GTX 750 ti Twin Frozr OC 2GB

So, this is why now i need a expert opinion, because at first look, i can believe right that maybe Smach Z pro can really handle ps2 games at stable 60fps?
(not to mention that he set 1080p, maybe unecessary on portable device, so for sure, at least me, set resolution at 720p or less)

 

Surface Pro 4 is too expensive...
But i see few ps2 games run over 40-50 fps on GPD Win (such as KH II Final Mix+), and Smach Z Pro is more powerful...
And Smach Z Turbo frequence are higher than SP4

So, right now, which are the best portable device for PS2 and GC/WII emulation? (not laptop indeed; im talking about a portable device that look like a portable console )