As the Blues prepare to take on the French giants in the Champions League quarter-final first leg in Paris on Wednesday night, Mourinho was remaining wary of such players as Zlatan Ibrahimovic, Edinson Cavani and Ezequiel Lavezzi.
The Portuguese touched on the fact that the bigger clubs in Europe all possess great goalscorers and was under no illusion that Laurent Blanc has on his hands a number of avenues to goal.
"It's a team full of fantastic strikers and goalscorers and that is what really makes the difference in this level,” said Mourinho.
"You look to the teams in the top eight at this moment, all of them good teams, good structures, with a certain philosophy, but after that you go and you see (Barcelona's Lionel) Messi, (Real Madrid's Cristiano) Ronaldo, (Borussia Dortmund's Robert) Lewandowski, Diego Costa, Ibrahimovic, Cavani, Lavezzi.
"They (PSG) have lots of them. At this level it's a very important part of a team."
This season, Ibrahimovic has netted 25 league goals and 10 in the Champions League, Cavani has 14 domestically and four continentally while Lavezzi has struck seven times in Ligue 1 and once in Europe.
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