On the surface these two products look relatively similar in that they are both ensemble based orchestral libraries. However there are large differences in how they behave. The differences are explained in the below video and article.
Orchestral Foundations features up to 7 dynamic layers, making its expression more responsive than Albion ONE which contains up to 3.
This means Orchestral Foundations has a smoother, more natural response when progressing through its dynamics.
At this time (October 2020) Albion ONE features a greater array of Articulations, such as Legato, 8va patches.
Coming in 2021 will be an array of Film Scoring Selects which expand on the Orchestral Foundations Library.
Orchestral Foundations has up to 5 round robins, where as Albion ONE contains up to four.
Orchestral Foundations has more variety in its microphone options making it more flexible across genres from traditional orchestral music, to the use in popular music genres.
For example, the Tree 2 signal in Orchestral Foundations is closer (more upfront) than the tree found in Albion ONE, giving the sound more focus, but more narrow stereo image for denser arrangements.
Orchestral Foundations also features mixes from highly regarded engineers, and mixes that focus on vintage sounds using Abbey Road's ribbon mics.
Orchestral Foundations is recorded at Abbey Road Studio ONE.
Albion ONE is recorded in the hall at Air Lyndhurst Hall.
Orchestral Foundations has a more expansive percussion section, whereas Albion ONE features more Epic booms, and cinematic metal / hits. This makes Orchestral Foundations more suited to traditional orchestral music, as well as the cinematic sound.
Further, Orchestral foundations includes individual sections for Horns and Trumpets.