Hi.
CefGlue 1 is more like to CefSharp, it is also provide easy CLR<>JS interaction.
Xilium.CefGlue it is mainly just wrapper around CEF3, so it is probably requires some experience with CEF. Xilium.CefGlue not aimed just now to creating any controls, it bundled with some samples (WinForms, using off screen rendering mode with WPF, GTK#), samples doesn't cover all situations, but all of them is good starting point to integrate CEF in your's application.
In other side, CefGlue more aimed to use standard CEF binaries (at this time is possible), and doesn't require touch C++/CLI at all. As result Xilium.CefGlue can be used on Linux under mono, for example.
So it is hard to make decision with wrapper is better without knowledge of application requirements.