Command Console is more capable than Flechs Sheets in many ways though device support is more limited and there is no networked force saving or networked combat features.
These features are stable and more expansive than Flechs Sheets.
Forces can be built from Mechs of any kind, ground vehicles, VTOLs and BattleArmor available in the default network catalog, local catalogs using basic and advanced-query based search.
Command Console supports BV calculations, C³ network configuration and transport setups (riding on/in).
BV calculations are pretty good through standard tech but are shakier with more exotic stuff.
Sheets can be printed. The layouts range from new and nice (Quads) to rough and functional (Bipeds/BattleArmor) — some units can be bounced to Flechs Sheets for printing if the unit is supported.
Force building is not a core project goal and so some fluff things that’d might be expected from a dedicated force building tool (like faction filtering) are neither there nor in scope.
Absent network play, combat features are substantive than Flechs Sheets, but have only been tested on my end via automated tests, not real table play (ie it is neither beta nor even alpha but pre-alpha).
The core combat logic from TW / BMM is largely implemented and includes support for more unit types (quads, tripods, superheavy/lights, ground vehicles, VTOLs, BattleArmor) and more equipment rules than Flechs Sheets (comprehensive BMM/TW equipment with bits of minimal support for TO tech). Notable TW/BMM equipment rule absences currently includes AMS.
Combat event handling is more sophisticated — events can be skipped or event stacks exited mid resolution. Unit status can be manually updated mid event resolution.
The full movement-event handling from Flechs Sheets is not yet supported - move mode and distances can be input but, e.g., entering water n a walk and auto-triggering the PSR is not supported. Move-based physicals are supported though.
Lastly, there’s also a great deal of placeholder/experimental UI in unit detail views that though 'functional' exists largely for debugging plumbing rather than for people to have a nice time. There may also be some fussiness on touch screens. There are no network capabilities.