It's not only in iconography, either. The hymns are quite different, too, even from one era
within the Western church and another. Hence you have a hymn like "Crucem Sanctam Subiit" from the 12th century which is quite focused on Christ's sacrifice (as is fitting), with no emotionalism or focus on fleshly preoccupations:
He bore the holy cross who broke the power of hell
He was girded with power he rose again the third day
Alleluia
Christ has risen And shone upon his people whom he has bought back with his own blood
Alleluia
Christ has risen; Death will not master Him
Alleluia
Christ has risen; The stone that the architects rejected has become the chief cornerstone
Then, only a little while later (13th century), we find things like the famous "Stabat Mater", which contains things like this:
Make me feel as thou hast felt;
make my soul to glow and melt
with the love of Christ my Lord.
Holy Mother! pierce me through,
in my heart each wound renew
of my Savior crucified:
Let me share with thee His pain,
who for all my sins was slain,
who for me in torments died.
Let me mingle tears with thee,
mourning Him who mourned for me,
all the days that I may live
Now I don't really want to sit here and knock another church's theology or hymns, but it's hard not to notice how the latter hymn is focused on
feelings, and crying and all this. In other words, emotion and physical sensation/reaction. I don't think it's appropriate to say that there's something "wrong" with having emotions (we all do), but I am uncomfortable on a personal level with the idea that our devotion and worship should be turned to them and focused on them, as people of all different communions have different emotional temperaments, and hence may be more or less given to emotional reactions such as those wished for in "Stabat Mater". Whereas focusing on what Christ has done does not depend on such things.
Furthermore, I find it very interesting that it was not until the 13th century that Catholic-specific physical phenomenon in this area developed. Francis of Asisi is the first known stigmatic in Christian history, having experienced the phenomenon in 1224, two years before his death. From
Wiki's citation of his biographer, Thomas of Celano:
"When the blessed servant of God saw these things he was filled with wonder, but he did not know what the vision meant. He rejoiced greatly in the benign and gracious expression with which he saw himself regarded by the seraph, whose beauty was indescribable; yet he was alarmed by the fact that the seraph was affixed to the cross and was suffering terribly. Thus Francis rose, one might say, sad and happy, joy and grief alternating in him. He wondered anxiously what this vision could mean, and his soul was uneasy as it searched for understanding. And as his understanding sought in vain for an explanation and his heart was filled with perplexity at the great novelty of this vision, the marks of nails began to appear in his hands and feet, just as he had seen them slightly earlier in the crucified man above him.
His wrists and feet seemed to be pierced by nails, with the heads of the nails appearing on his wrists and on the upper sides of his feet, the points appearing on the other side. The marks were round on the palm of each hand but elongated on the other side, and small pieces of flesh jutting out from the rest took on the appearance of the nail-ends, bent and driven back. In the same way the marks of nails were impressed on his feet and projected beyond the rest of the flesh. Moreover, his right side had a large wound as if it had been pierced with a spear, and it often bled so that his tunic and trousers were soaked with his sacred blood."
I do not see in this any kind of reflection of the spirituality or even approach to spirituality I have found in my own church. Crucified seraphim suffering terribly, being thrown this way and that way by varying emotions, spontaneously appearing wounds, etc. This is all alien.
Looked at in this way, I wonder if Roman Catholics will still say that differences between their church and others' is minor, and on what basis. Often recourse is made to differences in
practice, which may be acceptable in any given communion according to its own standards, but things like stigmata are not "practice" -- they're claimed miraculous, God-manifesting physical phenomena to one, and alien (or delusion?) to another. And that one takes as miraculous what another would flee from is only further evidence of the great difference in ontology between RCism and others; or if you prefer, of
phronema.