The real crux of the issue is this. Either the Pope has the authority to erect and approve of a Liturgical Rite, or Suppress a Liturgical Rite. In the case of the OF and EF, Pope Benedict and Pope John Paul II, even Pope Paul by his granting Indults to older priests and other groups have said explicitly or implicitly that the EF was not completely suppressed, or in the case of Pope Benedict, that the EF was not suppressed at all.
Any honest scholarship of the Latin Rite liturgies, both those that survive today and those that either fell into disuse or were officially suppressed, will show that while a pattern exists among them, which includes the OF, there has never been one single Liturgy in the West. Each of the Liturgies has had it’s own customs, and shared in some of the externals. The prayers at the foot of the altar differ between the Carmelite, Dominican, Mozarabic, Ambrosian, Roman and other Latin Rites prior to Vatican II. So too the Last Gospel was not universally John I.
While the Roman Rite prior to Vatican II, even with the various changes made to the rubrics over the centuries from the time of St. Gregory the Great, is one of many Liturgical Rites used in the West. What is perfect about the Mass is that it is the same sacrifice as Calvary in an unbloody manner, where Jesus is both priest and victim. The rituals themselves when they conform to the Catholic ethos, which all Eastern and Latin Rite Liturgies authorized by the Holy See do, (including the OF) are equally the Sacrifice of our Lord. They are all of equal value.
Prior to Vatican II we were educated as Catholics that the Value of every Mass was infinite, while a Mass may differ in solemnity, from the poorest Mission chapel to a Solemn Papal Mass, it was of the same infinite value. So too if we are Catholics, we must believe today that any Mass that follows the rubrics of any approved rite is of equal value, whatever our aesthetic preferences may be.
For me I prefer the Mass in the EF, Russian and Armenian Rites. But as a spiritual source of graces, I will attend any. I would even guess that the rare occasions I assist at mass in my local parish, which is very OF, the graces I receive, (as opposed to those which are just as abundant as in any other rite) may be greater, because I go despite my aesthetic dislike for the rite, but because it is a valid, and authorized rite.
I would also be remiss to point out that the use of the EF does not guarantee devoutness. I knew one good Monsignor who would slip out while the choir sang the Gloria and Credo (once he fulfilled the obligation of reciting it sub voce at the altar) and take some long puffs on a cigar that he had placed on the stoop leading out from the sacristy, pointing his cigar at latecomers. Good thing the incense covered most of the cigar smell on his vestments. I could go on but the point is not to bash one rite or the other, rather to stress that it is the Holy See and not our own tastes or personal theological/liturgical ideas that dictates what is and is not a Catholic Rite.