In this scenario however Palpatine isn't a Sith Lord pulling the strings, he's just a senator. Valorum is still in charge, Dooku left on his own accord, Valorum made the GAR, etc. Could have the Republic won in this scenario?
__________________ "Vader's pulse and breathing were machine-regulated, so they could not quicken; but something in his chest became more electric around his meetings with the Emperor; he could not say how. A feeling of fullness, of power, of dark and demon mastery -- of secret lusts, unrestrained passion, wild submission -- all these things were in Vader's heart as he neared his Emperor. These things and more."
CIS, without Palps pulling the strings behind, the CIS vastly outnumbers the GAR, they could literally just overwhelm via sheer numbers, as I recall Palps purposely held back the CIS because they had such an overwhelming numbers advantage. Add to the fact that Palps had a hand in giving victories(IE: Giving the location for the Cortosis SBDs), plus Valorum is kinda a moron...
CIS crushes the Republic with its 12 (20?) quadrillion-strong army. The CIS could lose every battle and still win in the end through sheer attrition.
__________________
"The Daemon lied with every breath. It could not help itself but to deceive and dismay, to riddle and ruin. The more we conversed, the closer I drew to one singularly ineluctable fact: I would gain no wisdom here."
Depends on how much you think Sidious built up either side. But considering Sidious created the Republic's only army, it doesn't bode to well for them.