Align has a different species of Bifidobacterium. Align contains B. infantis while the Phillip's product contains B. bifidum and B longum.
There have been a couple of small trials where B. bifidum was contained in a cocktail of probiotics that show some positive results. However, B. bifidum and B. longum alone have not been clinically tested as far as I can tell.
-------------------- STABLE: ♂, IBS-D 50+ years - Science of IBS