Just having a gold plated pension plan isn't a guarantee of a good retirement, for Other factors have to be considered.

Has the person met the rule of, for example, 85?  Unless the person has met this rule, the person will not get full pension.

Is the pension fully indexed to inflation?  Or is it only partially indexed or not indexed at all?  Without indexing, a pension that funds a good retirement at the beginning will be eaten away by inflation.

What is the person's life expectancy?  For a person who expects to be around for a long time after retirement, the previous comment about indexing becomes even more important.

What kind of lifestyle will the person lead in retirement.  If a person expects to travel a lot more, for example, more savings and assets may be more important.