currently I have a rasperry pi zero w with raspbian and I installed kodi on it. Playback is fine (hardware acceleration is supported), the menus are responsive but most addons are sluggish (to say the least).
I saw various threads about kodi on armbian (e.g. this and this) and all say that the problem is lack of support of hw acceleration.
I assume the more powerful cpu would help with the addons but, unless something has changed, without hw acceleration it makes no