I confess that I have had difficulty finding Eastern Orthodox books that indicate their position, historical or otherwise on other Christian groups. I have found one fairly good source written by a Catholic (ADRIAN FORTESCVE) that makes at least eastern Orthodox historical thought pretty well.
It was natural that, soon after the Reformation, the Protestants, who had thrown off the Pope's authority, should remember and try to set up relations with the people in the East of Europe who, as far as this point went, had already for centuries stood in the same position. It is to the credit of the conservative spirit of the Orthodox Church that she has always refused communion with any religious body except on terms of the complete acceptance of the Orthodox faith. As we shall see, she believes herself to be the whole and only real Church of Christ, just as Catholics do. So any sort of alliance with other Churches on mutual terms is impossible, and the idea, often cherished, of building up a great united anti-papal Church to rival and balance the Catholic body has always broken down because of her refusal, as well as for other reasons. THE ORTHODOX EASTERN CHURCH,ADRIAN FORTESCVE (p252)
Then he goes on to explain various attempts of Protestants to try and build ties with the Eastern Orthodox Church and why it was impossible, listing among other things that the Protestants had a unacceptable view of Justification by Faith. He also lists that the Eastern Church rejects papal authority, purgatory, immaculate conception, and the phrase "the Spirit proceeds from the Son" (Filioque) as reasons why the Eastern Church considers the Roman Catholic as heretical.
From another source (this time written by an author within the Eastern Orthodox Church) we have a similar description:
Hence this church only cuts off all those who either do not receive the word of God, or mix their own improper opinions with it; therefore, the society of such people is not a church, but an assembly holding heterodox opinions, which is governed by the spirit of division, and not by the Spirit of God. Even at the present time, to the offence of Christians, we behold three chief sects or parties in Christianity; Papists, Lutherans, and Calvinists. They are mutually in opposition to one another. Popery, exclusive of its being filled with the most pernicious superstitions, and the edicts of Popes, in contradiction to the word of God, blindly holds the tenet in regard to the proceeding of the Holy Ghost above-mentioned, and explains it in opposition to the clear testimony of Holy Scripture. (A SUMMARY OF CHRISTIAN DIVINITY by PLATON,p162)
Therefore, it seems, at least from any actual published works (as old as these references are) within and without the Eastern Orthodox Church that "she believes herself to be the whole and only real Church of Christ, just as Catholics do".
Note: There will always be some ecumenical movements are claims by every church but without official recognition by top leaders these movements are always a little confusing and often greatly opposed by their leaders. To prove any real ecumenical stances one has to quote something officially recognized as canonical which seems impossible to find. However quoting from leaders in terms of rejection the other churches seems less difficult. Therefore as old as the quotes I have been able to find are, I actually trust them more then any random opinion found on the internet.