Though he (Drona) gave equal instructions to all, yet Arjuna became the foremost of all in lightness and skill. Drona was convinced that none of his pupils would be able to equal that son of Indra.
ऐन्द्रिमप्रतिमं द्रोण उपदेशेष्वमन्यता एवं सर्वकुमाराणामिष्वस्त्रं प्रत्यपादयत्॥