You can definitely make a tiny sensor array with higher technical resolution than traditional ISO 400 print film grain... maybe even ISO 100. The catch is, you'll have to light up the scene to retina-searing brightness levels like a color movie set from the 1930s, because your effective f-stop will be insanely high
No, you cannot match the resolution because the insanely high f-stop implies insanely high loss of resolution due to diffraction. At low f-stop, the optics determines the resolution and you can improve it by making the iris smaller but smaller iris results in the diffraction loss and there is an optimal f-stop with maximum resolution. Higher f-stop will not make it better.