OK, let me think about this properly.
Ford Fiesta ST 190HP - Renault Clio RS
Ford Focus ST 260HP - Renault Megane 265 RS
Ford Focus RS 315HP - Honda Civic Type R
Ford Mustang GT350R 550HP - Chevrolet Camaro Z/28
Ford GT 650HP - Chevrolet Corvette Z06
Ford F-150 RAPTOR 350HP - Chevrolet Silverado SS
That better?
I'd try something more like this (at least for the North American market):
Ford Fiesta ST <--> Chevrolet Sonic RS, Fiat 500 Abarth (NA trim gets the EsseEsse engine, standard Abarth suspension)
Ford Focus ST <--> Volkswagen GTI Performance Pack, Subaru WRX
Ford Focus RS <--> Volkswagen Golf R, Subaru WRX STi
Ford Taurus SHO <--> Buick Regal GN, Dodge Charger/Chrysler 300 AWD
Ford Mustang GT350 <--> Chevrolet Camaro 1LE (maybe ZL1?), Dodge Challenger Scat Pack
Ford Mustang GT350R <--> Chevrolet Camaro Z/28
Ford Raptor <--> Ram RamRunner (full kit by Mopar), Toyota Tundra TRD Pro
The problem in the North American market, at least, is that Ford either outright leads the pack in what they're doing, or walks into a bit of a whitespace effort with the car to bring in some sales. The Fiesta is without a doubt in a league of its own here, packing a lot more power per dollar than the Chevrolet and the Fiat, altogether being a much better value than each. The Chevrolet is much more like the MKV GTI when that first came out, not the most-powerful hot hatch available, but confident nevertheless with what it had, more of a grown-up's performance hatch. The Focus ST on the other hand offers a hell of a lot more performance than a lot of its competition when priced similarly, so it either has to punch down or up, depending on what you stack it up against. The RS should take care of some of that, but, here in the US anyway, the only real competition will be the Golf R.
The SHO really strikes a weird balance because of its awkward proportions. The car is physically huge, technically a full-size car, but interior dimensions are pretty small, much closer to a regular mid-size sedan. On top of that, its AWD, and that isn't exactly something that's offered by everyone, despite its popularity. The Buick is a little smaller and has less power, while the Dodge/Chrysler is a bit bigger, and packs more of a punch. The Mustang is kind of walking into that same kind of situation, now much closer in size to the Camaro and Challenger, just before a new Camaro shows up. The GT350 definitely has a bit more sporting potential than the 1LE thanks to nearly 80 more BHP, and while the Challenger's output is a bit closer, no one is going to mistake that land yacht as a track car. Up to the GT350R, absolutely, the Z/28 is right in its crosshairs. But, with a new Camaro on the way, no one really knows if that model will carryover, and well, the Hellcat is just overkill at that point.
The Raptor on the other hand really stands alone. They saw an opportunity in the market, grabbed it, and have completely owned it. The new TRD Pro efforts by Toyota are much closer to what Ford has going on, but the power that the current 6.4L and new 3.5L produce go far beyond what they have to offer. The RamRunner is closer in actual execution to what the Raptor is, but as something that isn't technically a factory effort (Mopar models do come with a warranty, however), it isn't exactly apples to apples. There have been rumors for a while that GMC would offer up a Raptor competitor, but I think that's been washed away by the Chevrolet Colorado ZR2 concept. With the diesel and King suspension setup, it could be a great, albeit smaller (and probably much more affordable) competitor to the Raptor, if GM ever gets around to building it. Only other way to compare it would be the "BRO FACTOR" on it, and Ram is going to probably steal some sales away with the Rebel, even though FCA absolutely says that it is not a Raptor competitor.