Da,i didn’t say that all of them equate the two. I said they compare them, which almost all do, because that’s how they justify teaching girls gemara. If there are modern orthodox jews who do not share this particular apikorsus – gevaldig.
Also, you’re well aware of norman lamms ideology and his statements about math requiring a birchas hatorah r”l. It is definitely a movement within modern Orthodoxy, though its more religious element does not accept it (though they don’t do a very good job at condemning it either)