I see that in many classes in the Ext.draw package the Ext.create pattern was replaced by new Ext.draw...().

Why? Is using Ext.create() too slow?

Here's an example from the Ext.draw.Surface class:

4.0.7
Code:
    initItems: function() {
        var items = this.items;
        this.items = Ext.create('Ext.draw.CompositeSprite');
        this.groups = Ext.create('Ext.draw.CompositeSprite');
        if (items) {
            this.add(items);
        }
    }
4.1 Beta
Code:
    initItems: function() {
        var items = this.items;
        this.items = new Ext.draw.CompositeSprite();
        this.groups = new Ext.draw.CompositeSprite();
        if (items) {
            this.add(items);
        }
    }