Setup default Matrix blocks and default values for sub-fields? Question is
what table can't achieve, can be achieve by matrix but problem is matrix cannot have default row value like table have.

Anyway to achieve it?
Thanks.
It's not possible to have default values for most field types and it is also not possible to have default matrix block already added to your new entries.

If there was an event that gets raised before an entry is displayed in the Control Panel's "Edit Entry" view, you could set default values rather easily with a custom business logic plugin.

There's no such event available yet, but you could vote for the feature request I just added:

Raise an event before entry is edited/loaded in CP